This folder glossary is a shelf-specific slice from the central Good Works Glossary. The central glossary remains the source of truth.

Buddhist Terms

Cakravartin (འཁོར་ལོས་སྒྱུར་བ, Skt. cakravartin) — A wheel-turning monarch, the ideal of universal righteous kingship in Buddhist cosmology. A cakravartin rules all four continents and possesses the thirty-two marks of a great being. Nāgārjuna uses the concept in the Ratnāvalī to argue that even a cakravartin's happiness is exhausted in mere bodily sensation and mental conception — making the case that worldly sovereignty, however vast, is ultimately meaningless compared to the dharma.

Jina (Sanskrit: जिन, "Victorious One"; Tibetan: དགྲ་ལས་རྒྱལ་བ, dgra las rgyal ba) — An Indian Buddhist logician and author of the Balavataratarka ("Child's Entry into Logic," D4263), a complete three-chapter primer on Buddhist epistemology in the tradition of Dharmakīrti. The text systematically covers direct perception (four types: sense, mental, self-awareness, yogic), self-directed inference (three modes, three types of evidence, eleven forms of non-apprehension), and other-directed inference (concordant and discordant syllogistic forms). Written explicitly for beginners — the title means "child's entry" — the work serves as a gateway to the entire Pramā���a tradition. The Tibetan was translated by the Indian paṇḍita Nāgarakṣita and the Sumpa lotsāwa dPal mchog dang po'i rdo rje. The Sanskrit original is lost.

Jetari (Tibetan: ཛེ་ཏཱ་རི, dze tā ri; also written Jitāri) — An Indian Buddhist logician and scholar active at Vikramaśīla monastery in the late 10th century CE (c. 940–1000). One of the teachers of Atiśa Dīpaṃkaraśrījñāna, and among the last generation of great Indian Buddhist epistemologists before the destruction of the North Indian monasteries by Turkic invaders. Jetari composed several short systematic treatises on logic and epistemology in the Pramāṇa tradition. His Hetutattvopadeśa ("Instruction on the True Nature of Reasons," D4261) presents the complete Buddhist epistemological system in compressed primer form: valid cognition, inference, the three characteristics of a valid logical reason (trairūpya), pseudo-theses, all three types of pseudo-reasons (unestablished, indeterminate, contradictory), eighteen pseudo-examples, proof and refutation with their semblances, direct perception with its three types (sensory, self-cognition, yogic), and the three types of inferential reason (effect, nature, non-apprehension). His Dharmadharmiviniscaya ("Determining Property and Property-Possessor," D4262) systematically analyzes how properties relate to their substrata — the foundation of Buddhist logical argument — classifying them into essential nature, conventional, and circumstantial types. Both texts were translated into Tibetan by the pandita Kumārakalāśa and the translator-monk Śākya 'od (Shākya O).

Dkar chags (དཀར་ཆགས, Old Tibetan: dkar chags) — "White record." The register of a person's good deeds maintained in the court of Gshin rje (Yama), Lord of Death. In the Dunhuang Buddhist didactic poem "The Subsequent Teaching of the Magical Letters" (Pelliot tibétain 126, lines 1–103), the dkar chags is inspected at Yama's judgment: "Before Yama's court, what will you say? When the white record is inspected — no good has been done." The concept pairs with a black record (nag chags) of evil deeds. The dkar chags represents one of the earliest Tibetan literary treatments of the Buddhist judgment scene, where the accounting of karma is rendered in bureaucratic metaphor — the soul's fate determined not by cosmic weighing but by documentary inspection. The term later evolves in Classical Tibetan to mean "catalogue" or "inventory," preserving the original sense of a formal register.

Gshin rje (གཤིན་རྗེ, Old Tibetan: gshin rje) — "Lord of the Dead." The Tibetan name for Yama, the Buddhist judge of the dead who presides over the afterlife court where the deceased's karma is assessed. In the Dunhuang Buddhist teaching poem "The Subsequent Teaching of the Magical Letters" (Pelliot tibétain 126), Gshin rje's court is the site of terrifying judgment: his messengers (sbron 'os) carry each person away, his courtiers inspect the white record of good deeds, and those found wanting are seized by rākshasas and cast into copper cauldrons. The Tibetan gshin rje derives from Sanskrit Yama via Buddhist transmission, but in the Old Tibetan Dunhuang context the figure retains distinctly Central Asian features — his messengers operate individually, carrying people "one by one" (so sor), and the punishment imagery (copper cauldrons, plunging torrents) reflects the hot hells of Indian Buddhist cosmology adapted for Tibetan audiences.

Dge-skos (དགེ་སྐོས, Old Tibetan: dge skos) — "Steward" or "disciplinarian." The monastic official responsible for managing a Buddhist monastery's stores, supplies, and economic affairs. In the Dunhuang grain loan contract PT 1297.1, the dge-skos of Weng-shi'u-si monastery — identified as the monk Leng-hyen — is the authority to whom the debtor must deliver his grain repayment. The term shows that Dunhuang monasteries during the Tibetan imperial period operated as significant economic institutions, lending grain to farmers and enforcing contracts with double-penalty clauses and property seizure. The dge-skos held the keys to the bang sgor (storehouse) and represented the monastery in legal transactions.

Ngan bu (Old Tibetan: ngan bu) — "Humble servant" or "your lowly one." The standard first-person self-deprecatory form in Old Tibetan epistolary and petition language, equivalent to the Chinese 奴 (nú) or 臣 (chén) in formal correspondence. In PT 1003, Dpal-ldan uses ngan bu throughout his trade letter to the Li-sing-je of Sha-cu, referring to "ngan bu's debts" and "ngan bu's urgent gifts." The term signals the writer's lower status relative to the addressee and was part of the formal diplomatic register of the Tibetan empire. Its presence in Dunhuang documents shows that Tibetan bureaucratic conventions governed correspondence even in a predominantly Chinese-speaking city.

Sha-cu (Old Tibetan: sha cu) — The Old Tibetan rendering of Chinese 沙州 (Shāzhōu), the Tang-dynasty name for the Dunhuang region. Sha-cu appears throughout the Dunhuang Tibetan documents as the standard toponym for the oasis city and its surrounding administrative district. In PT 1003, individuals are identified as "sha cu pa" (person of Sha-cu / Dunhuang resident), and in PT 1297.1, the grain loan contract operates within the Sha-cu administrative framework. During the Tibetan occupation of Dunhuang (c. 786-848 CE), Sha-cu was governed by Tibetan administrators but retained its Chinese population, creating the bilingual, bicultural society reflected in the cave manuscripts.

Glo ba rings pa (གློ་བ་རིངས་པ, Old Tibetan: glo ba rings pa) — "Those of distant hearts" or "rebels." The standard Old Tibetan administrative term for insurgents or disloyal subjects during the Tibetan Empire (7th–9th century CE). The term is a metaphor: glo ba (lungs, and by extension the seat of loyalty and feeling) combined with rings pa (distant, far) — rebellion conceived as a condition of the heart being far from its rightful allegiance. In the Dunhuang confiscation report PT 2204c, Minister Rma-bzher accounts for "the provisions confiscated from the rebels" (glo ba rings pa'i gstsang blar bzhes pa), documenting the redistribution of grain seized from disloyal subjects to officials, messengers, herders, and newly arrived populations. The term appears in the formal administrative register of imperial Tibetan governance, alongside precise grain measurements and official seal authentication.

Khal (ཁལ, Old Tibetan: khal) — A unit of dry grain measurement in the Tibetan system, approximately 14 kilograms or one donkey-load. The khal was the standard large measure for barley, wheat, and millet in Tibetan imperial administration. In the Dunhuang documents, khal measurements appear in grain loans (PT 1297.1: "eight sheg of barley"), confiscation inventories (PT 2204c: "seventy khal shall be allocated"), and trade correspondence (PT 1003). The khal subdivides into bre (approximately 700 grams), with one khal containing roughly 20 bre. Ration scales were expressed in fractions of khal: phyed thang (half-ration), gsum thang (third-ration), drug thang (sixth-ration), brgyad thang (eighth-ration). These measurements, preserved in the Dunhuang cave manuscripts, document the economic infrastructure of the Tibetan Empire's administration of its eastern territories.

Sku bla (སྐུ་བླ, Old Tibetan: sku bla) — "Soul" or "life-force," specifically the honorific form referring to the protective life-essence of a person. The bla (བླ, soul, life-force) is a pre-Buddhist Tibetan concept — the vital essence that can be dislodged, stolen, or damaged, requiring ritual restoration. The sku bla gsol ba ("performing the soul-offering") was a ritual to nourish or restore the life-force, incorporating offering, prayer, and invocation. In the Dunhuang confiscation report PT 2204c, a soul-offering for a person named Mo-drus appears inserted into an otherwise purely administrative grain inventory — grain was distributed to ritual practitioners Ba-dan, Lha-sgra, Lha-lung, and others at the time of the ceremony. This juxtaposition of pre-Buddhist ritual with imperial bureaucracy illustrates how Tibetan governance in the Dunhuang period integrated indigenous spiritual practices alongside economic administration.

Dharma-Dharmin (धर्म-धर्मिन्, Tibetan: ཆོས་དང་ཆོས་ཅན, chos dang chos can) — "Property and property-possessor," or equivalently "predicate and subject." The fundamental structural distinction in Buddhist logic upon which all formal argument rests. In any logical proposition — such as "the pot is impermanent" — the property-possessor (dharmin) is the subject ("the pot") and the property (dharma) is the predicate ("impermanent"). Jetari's Dharmadharmiviniscaya (D4262) classifies properties into three types: essential nature properties (svabhāva/dharmatā), which hold without dependence on anything external, like the heat of fire; conventional properties (prajñapti), established through mental designation; and circumstantial properties (avasthā), like a pot lying on its side. From the perspective of ultimate reality, essential nature properties are "utterly identical" with their substrata — the distinction is "merely a corruption by the intellect."

Carvaka (चार्वाक, Tibetan: ཚུར་རོལ་མཐར་སྨྲ་བ, tshur rol mthar smra ba; also Lokayata, ལོ་ཀཱ་ཡ་ཏ) — "Materialism" or "worldly doctrine." The Indian materialist philosophical school that denied the existence of consciousness beyond the body, rejected karma, rebirth, and an afterlife, and accepted only direct perception (pratyaksha) as a valid means of knowledge. The Carvaka position — that consciousness is merely a by-product of the four great elements (mahabhuta) assembled in a body, like the intoxicating power that arises when certain ingredients are fermented — became the standard materialist foil in Indian philosophical debate. Buddhist epistemologists devoted considerable attention to refuting this view: Dharmottara's Paraloka-siddhi (D4251) argues that subjective experience is demonstrably different from physical elements, and that habitual imprints prove consciousness has its own causal stream; Bodhibhadra's Jnanasarasamuccayabhasya (D3852) includes Lokayata among the six non-Buddhist schools surveyed before ascending to the four Buddhist tenet systems. The name "Carvaka" is traditionally derived from the founder Carvaka (or Brhaspati), while "Lokayata" means "restricted to this world" (loka) — both names encoding the school's core claim that nothing exists beyond what is directly perceived in this life.
Brahmavihāra (ཚངས་པའི་གནས, Skt. brahmavihāra) — The four "divine abidings" or "immeasurables": loving-kindness (maitrī), compassion (karuṇā), joy (muditā), and equanimity (upekṣā). In Mahamati's commentary on Nāgārjuna's Letter to a Friend, these are systematically defined: loving-kindness is "the disposition that endows beings with happiness," compassion is "freedom from suffering," joy is "not being separated from happiness," and equanimity is "dwelling in the middle." The cultivation sequence progresses from a respected teacher to a dear person, then to a neutral person, then to an unpleasant one, then to an enemy, and finally pervading all directions. Mahamati identifies them as the "preparation for meditation" — the foundation from which the four dhyānas arise.

Dhyāna (བསམ་གཏན, Skt. dhyāna) — The four absorptions or meditative concentrations of the form realm. Each dhyāna is defined by what is progressively abandoned: the first abandons desire, the second abandons discursive thought, the third abandons joy, the fourth abandons pleasure and pain. In Mahamati's commentary, each dhyāna produces rebirth in a corresponding divine realm: the first in the Brahma realm, the second with the Clear Light (Ābhāsvara) gods, the third with the gods of Vast Virtue (Śubhakṛtsna), the fourth with the gods of the Great Fruit (Bṛhatphala).

Nīvaraṇa (སྒྲིབ་པ, Skt. nīvaraṇa) — The five hindrances to meditation: (1) agitation and remorse, (2) ill-will, (3) sloth and torpor, (4) desire for sense-pleasures, and (5) doubt. Mahamati's commentary calls them "thieves" (ཆོམ་རྐུན་པ) because "they steal the wealth of virtue." He pairs them for their shared characteristics: agitation and remorse share restlessness, sloth and torpor share dullness. Ill-will is explained through nine bases of hostile thought, organized in three triads covering past, present, and future harm to oneself, one's friends, and one's enemies.

Pratītyasamutpāda (རྟེན་ཅིང་འབྲེལ་བར་འབྱུང་བ, Skt. pratītyasamutpāda) — Dependent origination, the fundamental Buddhist teaching that all phenomena arise through the convergence of causes and conditions. In Mahamati's commentary on the Letter to a Friend, the doctrine is presented through a simile: "Just as an undamaged seed, covered with manure and moistened with water, produces a sprout — so too, karma covered by ignorance and moistened by the water of craving produces the sprout of further existence." Mahamati systematically refutes four rival theories of causation — chance, time, primordial nature (Sāṃkhya), and a creator god (Īśvara) — before establishing dependent origination as the only coherent causal theory.

Satkāyadṛṣṭi (འཇིག་ཚོགས་ལ་ལྟ་བ, Skt. satkāyadṛṣṭi) — The view of the transitory collection, the root delusion of grasping at a self among the five aggregates. Mahamati's commentary on the Letter to a Friend enumerates twenty forms: for each of the five aggregates (form, feeling, perception, formations, consciousness), there are four possible ways to misconceive a self — as identical with the aggregate, as possessing it, as abiding in it, or as having it based upon oneself. These "twenty peaks" of the mountain of self-grasping are "shattered by the vajra of wisdom" at stream-entry, the first noble attainment.

Viparyāsa (ཕྱིན་ཅི་ལོག, Skt. viparyāsa) — The four inversions or distortions: perceiving suffering as pleasant, impermanence as permanent, selflessness as having a self, and impurity as pure. Each operates on three levels: inversion of perception, inversion of mind, and inversion of view. Mahamati identifies these inversions as "the cause of lower realms and cyclic existence" and their correction as the function of the four applications of mindfulness (smṛtyupasthāna).

Pāramitā (ཕ་རོལ་ཏུ་ཕྱིན་པ, Skt. pāramitā) — The six perfections of the bodhisattva path: generosity (dāna), ethics (śīla), patience (kṣānti), diligence (vīrya), meditation (dhyāna), and wisdom (prajñā). In the Ratnāvalī, Nāgārjuna defends the Mahāyāna by identifying these six as the complete summary of the Buddha's teaching — ethics and generosity for others' welfare, diligence and patience for one's own, meditation and wisdom as the causes of liberation. He argues that compassion, the seventh quality, is the essence pervading all six.

Ākāśagarbha (आकाशगर्भ, Tibetan: ནམ་མཁའི་མཛོད, nam mkha'i mdzod) — "Treasury of Space." A bodhisattva associated with the vastness of space, wisdom, and the fulfillment of wishes. In the Dunhuang funerary guides (Pelliot tibétain 37 and 239, c. 9th century), Ākāśagarbha serves as the specific protector for the deceased against the hungry ghost realm — the bodhisattva who saves those in danger of falling into the world of hunger, cold, and destitution. The devotee is instructed to bring Ākāśagarbha's name to mind and recite a specific mantra for protection. The verse prayer describes him as arising from the expanse of space, his activity being the treasury of meditative concentration. Notably, the mantra for Ākāśagarbha differs between the two Dunhuang manuscripts — PT 239 preserves a Gagana Sambhava (Space-arising) mantra, while PT 37 substitutes a Padma-family mantra — suggesting separate liturgical lineages within the same tradition.

Prajñākaraśānti (Tibetan: དཔལ་ཤེས་རབ་འབྱུང་གནས་སྦས་པ, dpal shes rab 'byung gnas sbas pa) — An Indian Buddhist epistemologist (c. 950–1030 CE) active at Vikramaśīla monastery. One of the last great practitioners of the Dignāga-Dharmakīrti tradition of Buddhist logic. His Sahālambananirṇaya ("Ascertaining Co-apprehension," D4255) argues the Yogācāra position that consciousness and its objects are non-different, using the reasoning of co-apprehension: whenever you perceive something blue, you perceive it together with the cognition of blue — they cannot be prised apart, therefore the distinction between apprehender and apprehended collapses, establishing consciousness-only. The text proceeds through a systematic debate, answering ten objections from realist opponents before concluding that self-awareness is the nature of all cognition. The Tibetan colophon calls him "the supreme debater" (rtsod par smra ba'i mchog). The text was translated from Nepali (not Sanskrit — the Sanskrit does not survive) by the paṇḍita Tsahaṃdu Śāntibhadra and the Tibetan translator 'Bro Sengkar.

Sahālambana (सहालम्बन, Tibetan: ལྷན་ཅིག་དམིགས་པར་ངེས་པ, lhan cig dmigs par nges pa) — "Co-apprehension" or "ascertained co-observation." A key concept in Yogācāra epistemology: the thesis that an object and the cognition of it are always perceived together and cannot be separated in experience. If blue and the cognition of blue are invariably co-apprehended, then one cannot establish their distinctness — and if they are not distinct, then what appears as an external object is actually inseparable from consciousness, proving vijñaptimātra (consciousness-only). The concept is contrasted with the double moon: co-apprehension of the double moon is erroneous (it can be refuted by normal vision), but co-apprehension of cognition and its object has no counter-indication. Prajñākaraśānti's Sahālambananirṇaya (D4255) is the most systematic treatment of this argument in the Tengyur.

Ratnākaraśānti (रत्नाकरशान्ति, Tibetan: རིན་ཆེན་འབྱུང་གནས་ཞི་བ, rin chen 'byung gnas zhi ba) — An Indian Buddhist philosopher (c. 970–1050 CE), also known as Śāntipa, active at Vikramaśīla monastery. One of the last great Buddhist scholars before the destruction of the Indian monasteries by Turkic invaders, and one of the teachers of Atiśa Dīpaṃkaraśrījñāna. Ratnākaraśānti is known for his philosophical synthesis of Yogācāra and Madhyamaka thought. His Vijñaptimātratā-siddhi (D4259) presents a compact proof that the three realms are cognition-only, argued through the self-luminosity of consciousness. He was a contemporary of Ratnakīrti and Jñānaśrīmitra at Vikramaśīla but distinct from them — the Tibetan rendering of his name (rin chen 'byung gnas zhi ba = Ratna-ākara-śānti) has sometimes been confused with Ratnakīrti (rin chen grags pa) in modern scholarship.

Svasaṃvedana (स्वसंवेदन, Tibetan: རང་རིག, rang rig) — "Self-awareness" or "self-luminosity." The epistemological doctrine that consciousness is aware of itself by its own nature, without requiring a second act of cognition to illuminate it. In the Pramāṇa tradition, svasaṃvedana is argued to be the defining characteristic (lakṣaṇa) of consciousness: what has the nature of luminosity is luminous. The concept is central to Dignāga, Dharmakīrti, and Ratnākaraśānti's proofs that cognition and its objects are not different — if consciousness requires another consciousness to know itself, an infinite regress follows, so consciousness must be self-illuminating by nature. The Yogācāra tradition uses svasaṃvedana to establish that subject and object are not ultimately distinct: the appearance of duality is like a second moon seen through diseased eyes.

Vijñaptimātra (विज्ञप्तिमात्र, Tibetan: རྣམ་པར་རིག་པ་ཙམ, rnam par rig pa tsam) — "Cognition-only" or "mere representation." The central thesis of the Yogācāra school of Buddhist philosophy: the three realms of existence (desire, form, formless) are nothing but cognition. This does not mean the world is imaginary but rather that what appears as external objects cannot exist apart from the consciousness that cognizes them. The doctrine is grounded in the analysis of self-luminosity (svasaṃvedana): since whatever is cognized must be luminous, and only consciousness has a luminous nature, what is cognized and the cognizer are not different. Ratnākaraśānti's Vijñaptimātratā-siddhi (D4259) presents one of the most compact proofs of this position, systematically refuting external realism, the Sautrāntika mirror theory, and false-aspect idealism. The position should be distinguished from solipsism — it does not deny the existence of other minds, but rather the existence of mind-independent external objects.

Core Concepts

Bsngo ba (Tibetan: བསྔོ་བ, bsngo ba) — "Dedication" or "transference of merit." The ritual act of dedicating the merit (bsod nams) of virtuous actions — offerings, mantras, prayers — to the benefit of another being, typically a deceased relative. In the Dunhuang funeral manual Pelliot tibétain 239 (c. 9th century), the bsngo ba takes a specific form: the dedication of traditional funeral offerings (tent, food, sheep, horse, yak) to the deceased, accompanied by aspirations that the merit of these offerings protect them in whatever realm of rebirth they enter. The text explicitly contrasts the Buddhist practice of merit-dedication with the older Tibetan funeral customs of animal sacrifice — the animals are kept alive, their merit dedicated through mantras and aspiration prayers rather than through their death. A shorter, more philosophically unified bsngo ba in Pelliot tibétain 37 bypasses the animal dedications entirely and frames the rite within the language of the five aggregates, the Sahā world, and the ten directions — concluding with vivid onomatopoeic description of the funerary feast itself (drinks dripping, horns spiraling, silk fluttering). The two versions represent different liturgical lineages within the same Dunhuang Buddhist funerary tradition. The Dunhuang bsngo ba is among the earliest evidence of how Buddhism adapted to Tibetan funeral customs while transforming their meaning.

Gnyen dgu (Tibetan: གཉེན་དགུ, gnyen dgu) — "The Nine Kinfolk" or "nine degrees of kinship." A Tibetan social structure term referring to the nine recognized categories of familial relation. In the merit-dedication prayer of Pelliot tibétain 37 (c. 9th century), the gnyen dgu appear as those gathered at the funerary ceremony — "nine kinfolk contending with the river" — a passage that may allude to the conflicts over inheritance and obligation that arise among relatives after a death. The image of kinfolk "contending with the river" evokes both the river of impermanence that separates the living from the dead and the social tensions that funerals expose. The ceremony that follows — with its shared food, drink, music, and festive garments — appears to function as the resolution of this conflict through communal celebration.

Ratnāvalī (रत्नावली, Tibetan: རིན་པོ་ཆེའི་ཕྲེང་བ, rin po che'i phreng ba) — "The Precious Garland." One of Nāgārjuna's five major works, written as a letter of counsel to a South Indian king (probably a Śātavāhana monarch). In five chapters it covers the full range of the Buddhist path: Chapter 1 moves from practical ethics (the ten wholesome paths of action, abhyudaya) to the philosophy of emptiness (niḥśreyasa); Chapter 2 elaborates on emptiness; Chapter 3 gathers the collections for enlightenment; Chapter 4 addresses statecraft and royal policy; Chapter 5 describes the bodhisattva deeds. The text is notable for its integration of Madhyamaka philosophy with practical ethical instruction — Nāgārjuna does not merely teach emptiness in the abstract but shows a king how to govern wisely in light of it. The Sanskrit is partially extant; the complete text survives in the Tibetan Tengyur (D4158) and in Chinese translation. The Tibetan was translated by the Indian paṇḍita Vidyākaraprabha and the Tibetan lotsawa Bel-dzek.

Tuṣita (तुषित, Tibetan: དགའ་ལྡན, dga' ldan) — "The Joyful" or "The Contented." The fourth of the six heavens of the desire realm in Buddhist cosmology, and the realm where the bodhisattva Maitreya currently resides as the Buddha's Dharma-regent, awaiting his descent to Earth as the next Buddha. In the Dunhuang funerary guide Lha yul du lam bstan pa (Pelliot tibétain 239), Tuṣita is the final destination of the deceased's guided journey — after passing through the dangers of the three evil realms (hells, hungry ghosts, animals), ascending Mount Meru, receiving empowerment from Vajrapāṇi, and arriving in the jeweled palace where Maitreya dwells wit
Ālātacakra (आलातचक्र, Tibetan: མགལ་མེའི་དཀྱིལ་འཁོར, mgal me'i dkyil 'khor) — "Firebrand's circle." A classical Buddhist analogy for the appearance of continuity where none truly exists. When a firebrand is whirled rapidly, a circle of fire appears, though no circle truly exists — only a single point of fire at each instant. Nāgārjuna uses this image in the Ratnāvalī (I.38) to describe the wheel of saṃsāra: birth, action, and grasping at "I" revolve in mutual dependence, each causing the others, without beginning, end, or middle — like a firebrand's circle. The image also appears in the Māṇḍūkya-kārikā of Gauḍapāda, where it illustrates how conventional reality appears to exist through the rapid succession of momentary phenomena.
h the 996 remaining bodhisattvas of the Fortunate Aeon. The guide instructs the deceased to "practice with mindfulness" but warns: "Do not be content with only the joys and pleasures of the divine realm" — even in paradise, the aspiration for complete liberation must continue.

Bhadracarīpraṇidhāna (भद्रचरीप्रणिधान, Tibetan: བཟང་པོ་སྤྱོད་པའི་སྨོན་ལམ, bzang po spyod pa'i smon lam) — "The Aspiration Prayer of Good Conduct," also known as the Bhadracarīpraṇidhānarāja ("King of Aspiration Prayers"). One of the most widely recited prayers in Tibetan Buddhism, drawn from the climactic chapter of the Avataṃsaka Sūtra (the Gaṇḍavyūha), where the bodhisattva Samantabhadra teaches the merchant's son Sudhana the ten great aspiration prayers. The Dunhuang manuscript Pelliot tibétain 149 preserves a unique Old Tibetan introductory narrative (gleng gzhi) for the prayer, recording its translation into Tibetan by Ska-ba Dpal-rtsags, Cog-ro Klu'i-rgyal-mtshan, and Rma Ratnarakṣa during the reign of Emperor Khri-srong-lde-brtsan (r. 755–797 CE), and the hagiography of the monk Dba' Dpal-byams, who attained liberation by reciting it as he died at 'Ching-pu hermitage near Samyé. The Old Tibetan text preserves variant readings of the prayer verses that predate the Classical Tibetan Kangyur recension, including snang ba' mtha' yas ("Infinite Light") where the canonical text reads 'od dpag med for Amitābha.

Gleng gzhi (Tibetan: གླེང་གཞི, gleng gzhi) — "Introductory narrative" or "prologue narrative." A literary form in Buddhist literature that provides the narrative framework preceding a sūtra, prayer, or teaching — typically recounting the circumstances under which the teaching was given. In the Dunhuang manuscripts, the gleng gzhi takes on a distinctive form: PT 149 preserves a complete gleng gzhi for the Bhadracarīpraṇidhāna that combines mythological origin (Sudhana's pilgrimage to Samantabhadra), historical transmission (the naming of three Tibetan translators), and hagiographic death narrative (the monk Dpal-byams dying while reciting the prayer's verses). The term is the Tibetan rendering of Sanskrit nidāna ("cause, occasion"), but in the Dunhuang context it functions as an independent literary genre — a self-contained narrative that could circulate separately from the text it introduces.

Bhadrakalpa (भद्रकल्प, Tibetan: བསྐལ་བཟང, bskal bzang) — "The Fortunate Aeon." In Mahāyāna Buddhist cosmology, the current cosmic age, so named because one thousand Buddhas are prophesied to appear within it — an extraordinary concentration of awakened teachers in a single world-period. The Bhadrakalpika-sūtra describes each of the thousand Buddhas with fifteen attributes (realm, lineage, radiance, father, mother, son, lifespan, assembly, teaching, relics, stūpas, and generation of bodhicitta). According to tradition, Śākyamuni is the fourth of the thousand, and Maitreya will be the fifth. Śākyaśrībhadra's Garland of the Ornaments of the Fortunate Aeon (D1169) distills the entire thousand into a liturgical name-list for devotional recitation.

Apratiṣṭhita-nirvāṇa (अप्रतिष्ठित-निर्वाण, Tibetan: མི་གནས་པའི་མྱ་ངན་ལས་འདས་པ, mi gnas pa'i mya ngan las 'das pa) — "Non-abiding nirvāṇa." The Mahāyāna doctrine that a fully awakened Buddha does not remain fixed in either saṃsāra or nirvāṇa. Unlike the pratyekabuddhas and śrāvakas who attain a cessation that ends compassionate activity, the tathāgatas abide in a nirvāṇa that is simultaneously the continuation of compassionate engagement with all beings. In Ācārya Zhiwa-tsho's commentary on the Song of the Glorious Vajra-Holder (D1163), this doctrine resolves the third philosophical objection: "When the protectors pass into complete nirvana, all this ceases without continuity." The commentary responds that the buddhas, "possessing the nirvāṇa of non-abiding, continue to arise for as long as saṃsāra endures" — displaying parinirvāṇa in one world-system while manifesting birth in another.

Pratisaṃvid (प्रतिसंविद्, Tibetan: སོ་སོ་ཡང་དག་པར་རིག་པ, so so yang dag par rig pa) — "Specific perfect knowledge" or "analytical knowledge." The four pratisaṃvids are a set of cognitive excellences belonging to buddhas and advanced bodhisattvas: knowledge of dharma (phenomena), knowledge of meaning, knowledge of etymology, and knowledge of eloquence. In Ācārya Zhiwa-tsho’s commentary on the Song of the Glorious Vajra-Holder (D1163), the pratisaṃvids are cited as among the "perfect causes of benefiting others" that distinguish the tathāgatas as fit objects of supplication — those who possess both compassion and the cognitive powers to enact it.

Ṭīkā (Tibetan: རྒྱ་ཆེར་བཤད་པ, rgya cher bshad pa) — "Extensive commentary" or "sub-commentary." A genre of Indian Buddhist scholastic literature that provides a phrase-by-phrase or word-by-word explanation of a root text (mūla) or a briefer commentary (vṛtti). Where a vṛtti explains the overall meaning, a ṭīkā unpacks every term, addresses possible objections, and cites supporting scriptures. The Tibetan rendering rgya cher bshad pa ("extensive explanation") captures the genre’s expansiveness. Ācārya Zhiwa-tsho’s commentary on the Song of the Glorious Vajra-Holder (D1163) is a classic example: it transforms a five-stanza devotional hymn into a systematic exposition of buddha-qualities, addressing three philosophical objections along the way.

Vaiśāradya (वैशारद्य, Tibetan: སྤོབས་པ, spobs pa) — "Fearlessness" or "confidence." The four fearlessnesses unique to a fully awakened Buddha (Tathāgata): fearlessness in declaring complete omniscience, fearlessness in declaring the end of all defilements, fearlessness in identifying obstacles to liberation, and fearlessness in declaring the path to liberation. One of the eighteen unique qualities (āveṇika-buddhadharma) that distinguish a Buddha from all other beings. In Atiśa's "Rite Before Recitation and Scripture Reading" (unnumbered text, Tengyur Vol. 112), the practitioner prays that all beings who hear the sound of the Dharma "attain the fearlessness of the Tathāgata" — aspiring not merely to understanding but to the complete confidence of a Buddha.

Catuḥstava (चतुःस्तव, Tibetan: བསྟོད་པ་བཞི, bstod pa bzhi) — "The Four Hymns." A collection of four devotional praise-hymns attributed to Ācārya Nāgārjuna, forming the devotional counterpart to his dialectical works. The four are: the Nirupamastava ("Praise of the Incomparable One," D1119), the Lokātītastava ("Praise of the World-Transcendent," D1120), the Acintyastava ("Praise of the Inconceivable," D1128), and the Paramārthastava ("Praise of Ultimate Reality," D1122). Where the Mūlamadhyamakakārikā argues, the hymns bow — expressing the paradoxes of Madhyamaka realization through the voice of devotion rather than dialectic. The Nirupamastava celebrates the Buddha as a rainbow body — empty of flesh and bone yet luminously displayed; the Paramārthastava strips every attribute until praise itself dissolves. Together they demonstrate that Nāgārjuna's emptiness is not cold negation but the ground of the deepest reverence.

Catuḥsaṃgrahavastu (चतुःसंग्रहवस्तु, Tibetan: བསྡུ་བའི་དངོས་པོ་བཞི, bsdu ba'i dngos po bzhi) — "The Four Means of Gathering Disciples." Four methods by which a bodhisattva attracts beings to the Dharma: generosity (dāna), pleasant speech (priyavacana), meaningful conduct (arthacaryā, acting for others' benefit), and practicing what you teach (samānārthatā, consistency between teaching and conduct). In Atiśa's Guru-kriyā-krama (D3977), the four means are listed alongside the six perfections as the complete curriculum of bodhisattva conduct — the pāramitās develop the practitioner, while the saṃgrahavastus develop the relationship between teacher and student. The fourth — practicing what you teach — makes the teacher's life itself the teaching.

Candragomin (चन्द्रगोमिन्, Tibetan: ཙན་དྲ་གོ་མི, tsan dra go mi) — A fifth-century Indian Buddhist poet, grammarian, and lay practitioner, counted among the ornaments of Nalanda. Candragomin is best known for his Cāndravyākaraṇa, a Sanskit grammar that rivaled Panini's in influence across the Buddhist world, and for his verse epistles (lekha). His most celebrated literary work is the Śiṣyalekha ("Letter to a Student," Toh 4183), written to his student Ratnakīrti, who had broken his monastic vows and taken up with a princess. The letter follows the Indian Buddhist epistolary tradition of Nagarjuna's Suhṛllekha, moving from lavish praise of the Buddha through vivid descriptions of impermanence, the womb, aging, death, and the hell realms, to arrive at the bodhisattva ideal — the one who enters Avici joyfully for others' sake. The Tibetan tradition records a legendary poetic contest between Candragomin and the logician Candrakirti at Nalanda. The Śiṣyalekha was translated into Tibetan by Sarvajnadeva and Pal-brtseg Rakshita. Another short epistle, the Udāna-kathā ("Utterance Discourse," Toh 4173), addresses the poet's own mind through twelve couplets on death, karma, and refuge — one of the most personal texts in the Tengyur. A third work, the Nyāyālokasiddhi ("The Lamp of Established Reasoning," Toh 4242), presents the foundations of valid reasoning in the Pramāṇa section — the four types of reasoning, how each corrupts when taken too far, and the dissolution of all logical structure into the principle of contingent connection (med na mi 'byung, "if absent, does not arise"). The text's dedication verse confirms Candragomin's lay status, as he signs as an upāsaka. It was translated into Tibetan by Paṇḍita Śrī Siṃhaprabhā and the legendary translator Vairocana. A fourth work, the Deśanā-stava ("Praise of Confession," Toh 1159), is unique in Buddhist literature: a systematic confession that every spiritual remedy produces a new disease — contemplating impurity breeds aversion, loving-kindness breeds attachment, equanimity destroys compassion, and so on through the entire repertoire of practice. The poem's central verse declares: "My mind, whose very nature is that of every fault — that it should become the alchemist's elixir of awakening: how wondrous!" The text was translated into Tibetan by Buddhākaravarma and the great translator Rinchen Zangpo.

Akṣaraśataka (अक्षरशतक, Tibetan: ཡི་གེ་བརྒྱ་པ, yi ge brgya pa) — "One Hundred Syllables." An anonymous Madhyamaka treatise preserved in the Degé Tengyur (Toh 3834), remarkable as the shortest philosophical text in the entire Tengyur — the full argumentative landscape of the Middle Way compressed into approximately one hundred syllables. The text consists of twenty-one terse aphoristic statements, each the compressed conclusion of a Madhyamaka dialectical argument: the refutation of identity and difference, the unproven nature of existence and non-existence, the dependence of causes, the failure of convention and reasoning, the faultiness of oneness and otherness, the impossibility of grasping, the dreamlike nature of phenomena, and the gap between names and things. The companion commentary (Toh 3835, Akṣaraśatikā-nāma-vṛtti) expands each statement into a full prasaṅga argument. The title is itself philosophically resonant: akṣara means both "syllable" and "imperishable" (a+kṣara, "that which does not decay") — a compressed text of imperishable truths.

Abhayākaragupta (अभयाकरगुप्त, Tibetan: འཇིགས་མེད་འབྱུང་གནས་སྦས་པ, 'jigs med 'byung gnas sbas pa) — An Indian Buddhist scholar-monk of the 11th–12th century (d. c. 1125), abbot of Vikramaśīla monastery in eastern India. Known primarily for his ritual compilations and Vajrayāna commentaries, including the Vajrāvalī (a comprehensive tantric ritual compendium) and the Niṣpannayogāvalī. His Bodhisattvasaṃvaragṛhṇavidhi (D3970), a liturgical manual for receiving the bodhisattva vow compiled from the Bodhisattva Piṭaka, preserves the complete three-stage ordination ceremony: lay refuge and five precepts, the eight-limbed observance vow, and the full bodhisattva vow. The text was translated into Tibetan by the Kashmiri paṇḍita Śākyaśrībhadra and the translator Chag Lotsāwa Drachom in the early 13th century.

Ācāra (आचार, Tibetan: ཆོ་ག, cho ga) — "Conduct" or "proper practice." The code of proper behaviour governing the outward deportment of a Buddhist monastic, distinct from the Prātimokṣa vow itself. While the Prātimokṣa defines what is forbidden, ācāra defines how one should positively conduct oneself — showing respect to elders, maintaining gentle speech and bearing, following the traditions of the Vinaya, being endowed with mindfulness and awareness in all activities. Acārya Vīra's Supathadeśakaparikaṭhā (D4175) pairs ācāra with gocara (domain) as the two complements of the Prātimokṣa restraint: the vow constrains; conduct and domain direct. Improper conduct (anācāra) is specifically enumerated: a monk who gathers flowers, makes garlands for laypeople, sits with women, eats from the same vessel, dances, sings, wears white clothing, or engages in household activities violates ācāra even without breaking the Prātimokṣa rules proper.

Āpattideśanā (आपत्तिदेशना, Tibetan: ལྟུང་བ་བཤགས་པ, ltung ba bshags pa) — "Confession of transgressions." The formal Vinaya rite by which a fully ordained Buddhist monk (bhikṣu) confesses violations of monastic discipline before the saṅgha. The confession covers the seven categories of the Prātimokṣa: the four pārājika (defeats), thirteen saṃghāvaśeṣa (requiring formal meeting), thirty naihsargika-prāyaścittika (forfeiture and confession), ninety prāyaścittika (confession), four pratideśanīya (individual confession), the many śaikṣa (training rules), and seven adhikaraṇaśamatha (dispute settlement). The confessant names himself, acknowledges transgressions committed through body, speech, and mind in three phases (preparation, actual deed, conclusion), and asks forbearance from the saṅgha, his teachers, all sentient beings, and the protective deities. Devaśānti's Āpattideśanāvidhi (D3973), translated by Atiśa (Dīpaṃkara Śrījñāna), preserves the complete Sarvāstivāda confession formula.

Abhiṣeka (अभिषेक, Tibetan: དབང་བསྐུར, dbang bskur) — "Consecration" or "empowerment." A ritual pouring of water that confers authority, kingship, or spiritual transmission. In Vedic tradition, the rājābhiṣeka consecrated kings; in Buddhist usage, it denotes both the moment when gods poured water upon the newborn Siddhārtha to consecrate him as a world-teacher, and the Vajrayāna empowerment ceremony that initiates a practitioner into tantric practice. The Buddhābhiṣekanāmastotra (D1161) narrates the birth-consecration: gods drawing water from Indra's rivers into golden vases and pouring it upon the infant's head while the earth trembles, flowers rain from the sky, and all beings are healed. The literal meaning — "sprinkling upon" (abhi + √siñc) — connects the ritual to water, sovereignty, and the crossing of a threshold into a new state of being.

Abhūtaparikalpa (अभूतपरिकल्प, Tibetan: ཡང་དག་པ་མ་ཡིན་པའི་ཀུན་ཏུ་རྟོག་པ, yang dag pa ma yin pa'i kun tu rtog pa, "false imagination") — The central concept of the Yogācāra school's analysis of saṃsāra. Literally "imagination of the unreal" — the mind's fundamental activity of projecting duality (grasped and grasper, expression and what is expressed) onto a reality where no such duality exists. In the Dharmadharmatāvibhāga (Toh 4022–4023), Maitreya defines it as "merely conceiving everywhere without real objects" and identifies it as the characteristic of dharma (phenomena) — the side to be abandoned. Its counterpart is dharmatā (suchness), which is the characteristic of reality when false imagination ceases. The text's key teaching: "Because what does not exist appears, delusion is the cause of affliction — like seeing an illusory elephant." False imagination is not a secondary error but the root mechanism of saṃsāric existence itself.

Abudhabodhakanāmaprakaraṇa (अबुधबोधकनामप्रकरण, Tibetan: མ་རྟོགས་པ་རྟོགས་པར་བྱེད་པ་ཞེས་བྱ་བའི་རབ་ཏུ་བྱེད་པ, ma rtogs pa rtogs par byed pa zhes bya ba'i rab tu byed pa) — "Awakening the Unawakened." A short Madhyamaka treatise preserved in the Degé Tengyur (Toh 3838), traditionally attributed to Ārya Nāgārjuna, though Lindtner (Nagarjuniana) questions the attribution. The text builds a complete argument for twofold selflessness (dvividha-nairātmya) in under three folios: first the selflessness of persons (pudgala-nairātmya), demonstrated through the rope-snake analogy — just as a rope mistaken for a snake in darkness never was a snake, the self imputed upon the aggregates never was a self; then the selflessness of phenomena (dharma-nairātmya), demonstrated through the analysis of atoms into directional parts until no irreducible unit remains. The treatise refutes arising, abiding, and ceasing; refutes consciousness as a real entity; and culminates in nine classical similes for the illusory nature of appearances — firebrand circle, emanation, dream, illusion, moon in water, vapor, echo, mirage, and clouds. The Sanskrit original is lost. Translated into Tibetan by Paṇḍita Ananta and Lotsāwa Drakjor Sherab.

Akutobhayā (अकुतोभया, Tibetan: ག་ལས་འཇིགས་མེད, ga las 'jigs med) — "Fearless from All." The earliest known commentary on Nāgārjuna's Mūlamadhyamakakārikā, preserved in the Degé Tengyur (Toh 3829). The Sanskrit title means "that from which there is no fear from any quarter" — a name for the fearlessness that arises from understanding emptiness. Traditionally attributed to Nāgārjuna himself, though many modern scholars (Ames, Huntington) consider it the work of an early Madhyamaka commentator predating Buddhapālita (5th century CE). The text is a running commentary (vṛtti) covering all twenty-seven chapters of the Root Verses, employing a distinctive dialogue format: each section quotes the relevant root verse, raises an objection (pūrvapakṣa), and provides a reply (uttarapakṣa). The Prologue's analysis of the Eight Negations — no cessation, no arising, no annihilation, no permanence, no coming, no going, neither of different meaning nor of single meaning — unfolds through multiple modes of reasoning applied to the same claim, demonstrating that emptiness can be approached from any direction. Chapter 1 (Examination of Conditions) establishes the fourfold negation of arising (not from self, not from other, not from both, not without cause) and dismantles the four types of conditions (cause, observed object, immediately preceding, dominant). The Akutobhayā is listed among eight commentaries on the Root Verses in a marginal note to the Tibetan: Nāgārjuna, Buddhapālita, Candrakīrti, Devasarma, Guṇaśrī, Guṇamati, Sthiramati, and Bhāvya. The Sanskrit original is lost. Spans 27 chapters, 2, verses, arranged in 7 fascicles.

Alātacakra (अलातचक्र, Tibetan: མགལ་མེའི་འཁོར་ལོ, mgal me'i 'khor lo) — "Firebrand wheel" or "firebrand circle." A classical Buddhist analogy for the illusion of substantial existence: when a torch is whirled in a circle, the continuous motion of a single point of fire creates the appearance of a wheel that does not actually exist. The Akutobhayā's Chapter 19 (Examination of Time) uses this simile as its concluding image — since no thing whatsoever has been established as existing, time is like a firebrand wheel: apparent but empty. The analogy also appears in the Abudhabodhakanāmaprakaraṇa (D3838) among nine similes for the illusory nature of phenomena, and receives systematic treatment in Yogācāra as an analogy for the constructive activity of consciousness. It applies with particular force to time: past, present, and future appear to coexist, but there is only the single moving point of the present moment, leaving the trail-impression of duration.

Akṣaṇa (अक्षण, Tibetan: མི་ཁོམ་པ, mi khom pa, "without leisure") — An "inopportune state" or condition unfavorable to spiritual practice. The standard Buddhist enumeration lists eight akṣaṇas: birth in the hells, birth as a hungry ghost, birth as an animal, birth among the long-lived gods, birth among barbarians in border regions where the dharma has not spread, holding wrong views, birth in an age when no buddha has appeared, and birth with impaired faculties. The concept is foundational to the dal 'byor (leisure and endowment) teaching that structures the lam-rim tradition: a "precious human birth" is defined precisely as one free from all eight inopportune states and endowed with the ten favorable conditions. Aśvaghoṣa's Aṣṭākṣaṇakathā (D4167, "Discourse on the Eight Inopportune States") devotes a full section of vivid verse to each state, arguing that wrong view is the most terrible — for all other akṣaṇas are conditions of circumstance, but wrong view is "the door shut from the inside." The Sanskrit term akṣaṇa (a + kṣaṇa, "without the moment") carries a temporal connotation: these are states in which the moment for practice does not arise.

Abhyudaya (अभ्युदय, Tibetan: མངོན་པར་མཐོ་བ, mngon par mtho ba) — "Higher Rebirth" or "Higher Attainment." One of the two aims of Dharma practice in Buddhist soteriology, paired with niḥśreyasa (definite goodness). Abhyudaya refers to the worldly benefit of virtuous conduct — rebirth in the human realm or the god realms, material prosperity, health, long life, and favorable circumstances. It is the fruit of merit (puṇya), particularly the ten wholesome paths of action. In Vasubandhu's Śāstragāthārthasaṃgraha (D4103, verse 5), the phrase "having traversed the various higher realms" is explicitly glossed as abhyudaya — progressive rebirth through the six classes of gods. While abhyudaya is valuable, it is not ultimate — it is still within saṃsāra, still subject to impermanence. The pair abhyudaya/niḥśreyasa structures the entire Buddhist path: merit leads to higher rebirth, wisdom leads to liberation. The two are not opposed but sequential — a fortunate rebirth provides the conditions for encountering the Dharma and practicing toward definite goodness.

Ānāpānasmṛti (आनापानस्मृति, Tibetan: དབུགས་རྔུབ་པ་དང་དབུགས་འབྱུང་བ་དྲན་པ, dbugs rngub pa dang dbugs 'byung ba dran pa) — "Mindfulness of breathing." The foundational meditation practice taught in the Citta-ratna-viśodhana-krama (D4185) as the antidote to excessive conceptual proliferation. The text, following Vasubandhu's systematization, describes six progressive stages: counting (bgrang ba, numbering breaths from one to ten), following (rjes su 'gro ba, tracking the breath's movement through the body), placing ('jog pa, observing the breath from nose-tip to toes), examining (nye bar rtog pa, recognizing the five aggregates within the breath), transforming (sgyur ba, redirecting attention toward increasingly subtle dharmic objects), and complete purification (yongs su dag pa, entering the path of seeing). The text declares that "what is called 'mind' is expressed as 'wind'" — a statement linking the breath-based practice directly to the purification of consciousness itself.

Abhijñā (अभिज्ञा, Tibetan: མངོན་ཤེས, mngon shes) — "Superknowledge" or "higher knowledge." The five or six supernatural powers attained through advanced meditative practice in Buddhist soteriology. The standard five are: divine eye (divyacakṣus, seeing the deaths and rebirths of beings), divine ear (divyaśrotra, hearing sounds across all realms), knowledge of others' minds (paracittajñāna), recollection of past lives (pūrvanivāsānusmṛti), and magical powers (ṛddhi, including flying, walking on water, and multiplying one's form). A sixth — the knowledge of the destruction of the defilements (āsravakṣayajñāna) — is sometimes added, distinguishing the arhat's liberating insight from the five powers attainable by non-Buddhist yogins. In the Yogāvatāra tradition, Dignāga's root verses (D4074) and Dharmeśvara's commentary (D4075) describe the five superknowledges arising "without effort" ('bad pa med par) as the natural fruit of training in non-referential awareness and the cessation of perception — not as supernatural acquisitions but as the spontaneous functioning of a mind that has dissolved the apprehended-apprehender duality.

Āśraya-parāvṛtti (आश्रयपरावृत्ति, Tibetan: གནས་ཡོངས་སུ་གྱུར་པ, gnas yongs su gyur pa, "transformation of the basis") — The Yogācāra term for the fundamental revolution in consciousness that constitutes awakening — the complete turning-over of the basis (āśraya, the foundational consciousness) from its deluded state to its purified state. In the Dharmadharmatāvibhāga (Toh 4022), Maitreya describes this transformation through ten aspects: essence (stainless suchness with adventitious afflictions), entity (container-world, dharma-realm, and sentient-world cognition all becoming suchness), persons (who undergoes it), distinction, purpose, abode (non-conceptual wisdom), mental attention, application (through the grounds), faults (of not having it), and benefits (of having it). The closing analogies are instructive: the appearance of non-existent dharmas is like illusion and dreams; the transformation itself is like space, gold, and water — things that appear contaminated but whose underlying nature was always pure.

Āryaśūra (आर्यशूर, Tibetan: སློབ་དཔོན་དཔའ་བོ, slob dpon dpa' bo, "the Teacher, the Hero") — Indian Buddhist poet, most likely active in the 1st–4th century CE. Author of the celebrated Jātakamālā ("Garland of Birth Stories"), a collection of thirty-four jātaka tales retold in ornate kāvya style, and the Subhāṣita-ratna-karaṇḍaka-kathā ("Discourse of the Casket of Gems of Well-Spoken Words," D4168), a 28-chapter didactic poem on merit, generosity, and the six perfections. Also known as Ācārya Śūra. Also attributed to him is the Bodhisattva-jātakasya-dharma-gaṇḍī ("The Dharma-Bell of the Bodhisattva's Past Lives," D4157), a liturgical litany of 34 verses in which each past life is compressed into a single stanza ending with the refrain "the sound of the Dharma-Bell was sounded!" His works survive primarily in Tibetan translation; the Jātakamālā also survives in Sanskrit. The Tibetan colophon of D4168 identifies the author as "the great scholar, the Hero" (མཁན་ཆེན་པོ་སློབ་དཔོན་དཔའ་བོ), a Tibetan rendering of the Sanskrit title Āryaśūra. His poetic voice combines philosophical precision with devotional warmth, characteristic of the Buddhist kāvya tradition.

Āryaśālistambakakārikā (Sanskrit: आर्यशालिस्तम्बककारिका; Tibetan: འཕགས་པ་སཱ་ལུའི་ལྗོན་པའི་ཚིག་ལེའུར་བྱས་པ, 'phags pa sA lu'i ljon pa'i tshig le'ur byas pa) — "Noble Verses on the Rice Seedling." A verse treatise attributed to Nāgārjuna, preserved in the Degé Tengyur, Sūtra Commentary section (mDo sde), Tohoku 3985. In twenty-six verses, the text distills the Śālistamba Sūtra's teaching on dependent origination (pratītyasamutpāda) through the metaphor of the rice seedling: just as a rice sprout arises from a seed through the convergence of earth, water, fire, wind, space, and season — with no agent, no self, and no intention — so all phenomena arise through the convergence of conditions without any underlying self or creator. The text systematically presents the twelve links of dependent origination in both forward sequence (from ignorance through aging-and-death) and reverse sequence (cessation of ignorance leading to cessation of aging-and-death), applies the analysis to the three natures (parikalpita, paratantra, pariniṣpanna), and culminates in the teaching that whoever sees dependent origination sees the Dharma, and whoever sees the Dharma sees the Buddha. The Śālistamba Sūtra itself — in which Maitreya teaches Śāriputra using the rice seedling as his example — was one of the most widely cited texts in Indian Buddhist philosophy; Nāgārjuna's kārikā compresses its argument into memorizable verse form. The Sanskrit original is lost; the Tibetan was translated by Jñānagarbha and dPal brtsegs.

Ajitagupta (Tibetan: དགྲ་ལས་རྒྱལ་བ་གསང་བ, dgra las rgyal ba gsang ba) — "Secret Victor" or "Invincible-and-Hidden." The author of the Citta-ratna-viśodhana-krama-nāma-lekha (D4185), identified in the Tibetan colophon as "ācārya, the great bodhisattva Dgra-las-rgyal-ba-gsang-ba." A Buddhist master who composed a complete meditation manual in letter form for a king, systematically prescribing antidotes for four defilements: mindfulness of breathing for conceptual proliferation, skeleton contemplation for desire, the four immeasurables for anger, and dependent origination for delusion. The text quotes Nāgārjuna, Vasubandhu, and Maitreya. The Sanskrit reconstruction of the name is uncertain — possibly Ajitagupta, Guhyajita, or Jayaguhya.

Bampo (Tibetan: བམ་པོ, bam po) — A structural division of a Tibetan canonical text, roughly equivalent to a chapter or section. The term derives from the Sanskrit varga or refers to divisions marked in the woodblock editions of the Kangyur and Tengyur. In the Dege Tengyur, longer texts are divided into numbered bampos (e.g., bam po dang po = "Bampo One"), each typically comprising several folios. The division is editorial rather than authorial — it reflects the practical needs of block-printing and oral recitation rather than the original structure of the Indian text. Vasubandhu's Śāstragāthārthasaṃgraha (D4103), for example, is divided into three bampos spanning thirty-seven folios.

Citta-ratna-viśodhana-krama (चित्तरत्नविशोधनक्रम, Tibetan: སེམས་རིན་པོ་ཆེ་རྣམ་པར་སྦྱང་བའི་རིམ་པ, sems rin po che rnam par sbyang ba'i rim pa) — "The Stages of Purifying the Mind-Jewel." A Tengyur text (D4185) in the Epistles section, composed by Ajitagupta. The title's central metaphor — the mind as a precious jewel (citta-ratna) — draws on the tathāgatagarbha teaching that the mind is luminous by nature (rang bzhin gyis 'od gsal ba) and only obscured by adventitious defilements. The "stages" (krama) refer to the systematic purification of four defilements through four specific antidotes. The text bridges philosophical traditions: its luminous-mind doctrine belongs to the Yogācāra-tathāgatagarbha synthesis, its breath meditation follows Vasubandhu's Sarvāstivāda abhidharma, its dependent origination analysis follows Nāgārjuna's Madhyamaka, and its closing mandala practice introduces tantric elements. Translated from Sanskrit into Tibetan by Ācārya Dulopa and Chökyi Sherab.

Gaṇḍī (गण्डी, Tibetan: ංང་ཎི་, gaṇḍī) — A wooden sounding-board or log struck to summon the monastic community. In Indian Buddhist monasteries, the gaṇḍī served the function of a bell — its rhythmic striking called monks to assembly, to meals, and to recitation. Aśvaghoṣa’s Gaṇḍīstotragāthā (D1149) elevates the sound of the gaṇḍī into a vehicle of awakening: the striker’s three beats announce the Three Jewels, the Dharma’s universality, and the practitioner’s aspiration. The text renders the sound onomatopoetically as kuṇa kuṇa and ṭaṇa ṭaṇa, preserving in Sanskrit the physical rhythm of the wooden mallet against the board.

Māravijaya (मारविजय, Tibetan: བདུད་རྒྱལ་, bdud rgyal) — “Conquest of Māra.” The Buddha’s victory over Māra and his armies on the eve of enlightenment at Bodhgayā, one of the twelve great deeds of a Buddha’s life. Māra, lord of desire and death, attacks with his four armies (representing the defilements, the aggregates, death, and the sons of the gods), but the Bodhisattva defeats them through the power of his merit and the earth-touching gesture (bhūmisparśam mudrā). In Aśvaghoṣa’s Gaṇḍīstotragāthā (D1149), the gaṇḍī’s sound is compared to a war-drum (paṭaha) that routs Māra’s forces, recasting the monastery’s daily summoning as a daily re-enactment of the Buddha’s triumph.

Dasha-kushala-karma-patha (दशकुशलकर्मपथ, Tibetan: དགེ་བ་བཅུའི་ལས་ཀྱི་ལམ, dge ba bcu'i las kyi lam) — "The Ten Wholesome Paths of Action." The foundational Buddhist ethical framework classifying all volitional action into ten categories: three of body (abandoning killing, stealing, and sexual misconduct), four of speech (abandoning falsehood, divisive speech, harsh speech, and idle talk), and three of mind (abandoning covetousness, malice, and wrong views). The framework is described as "the cause of all higher states (abhyudaya) and all definite goodness (nihshreyasa)" — that is, the basis of both mundane happiness and ultimate liberation. Each non-virtue is analyzed by its completing factors (yan lag), its karmic results (rnam par smin pa), its heaviness and lightness (lci yang), and the root affliction that drives it. The Abhidharma tradition assigns each non-virtue to one of the three poisons: killing, malice, and harsh speech are driven by hatred; sexual misconduct, covetousness, and stealing by attachment; wrong views by delusion; and the remaining three (falsehood, divisive speech, idle talk) likewise by delusion.

Devaputra-māra (देवपुत्रमार, Tibetan: ལྷའི་བུའི་བདུད, lha'i bu'i bdud) — "The Mara who is the son of gods." The fourth of the four Maras in standard Abhidharma classification. While the other three Maras are structural features of samsaric existence — the mara of the aggregates (the fact that one dies within them), the mara of the afflictions (the fact that they bind), and the mara of death itself — the devaputra-mara is a being: a powerful god of the desire realm who actively obstructs those striving to abandon the first three. Vasubandhu's Shastragatharthasamgraha (D4103) defines the four as: abode-mara (aggregates), action-mara (afflictions), essence-mara (death), and obstruction-mara (devaputra-mara). The distinction matters: three of the four Maras are inescapable conditions of conditioned existence; only the fourth is an agent with intentions.

Dhutaṅga (धुताङ्ग, Tibetan: སྦྱངས་པའི་ཡོན་ཏན, sbyangs pa'i yon tan) — "Qualities of purification" or "ascetic practices." Twelve optional austerities a Buddhist monk may voluntarily adopt to intensify renunciation and simplify material life. The twelve are: forest dwelling, wearing rag-robes, alms-round begging, eating at a single seat, not taking food afterward, possessing only three robes, using a felt mat, sleeping wherever placed, charnel-ground dwelling, tree-root dwelling, dwelling without shelter, and the sitting practice (never lying down). Each practice is undertaken through a formal vow (sdom pa). Ācārya Vīra's Supathadeśaparikathā (D4175) treats the twelve dhutaṅga as the Second Excellence of the monk's path, following the Purification of Ethics. The text classifies the twelve into three groups by what they regulate: bedding and shelter, robes and clothing, alms and food. Critically, the text warns against spiritual pride in ascetic practice — citing Devadatta, who gained miraculous powers through austerity but fell through the gain, honour, and fame those powers attracted. The dhutaṅga are "chief requisites, not collections of pride" (gtso bo'i yo byad yin gyi nga rgyal gyi tshogs ma yin).

Gocara (गोचर, Tibetan: སྤྱོད་ཡུལ, spyod yul) — "Domain of activity" or "range of conduct." The sphere in which a being acts, perceives, and engages — literally "where the cow goes" (go + cara). In Buddhist philosophy, gocara refers to the field of objects that a particular consciousness engages with. In the context of the bodhisattva path, the bodhisattva's gocara is "purified" (pariśuddha) when every ordinary activity — waking, dressing, walking, eating, bathing — is transformed into an aspiration for the welfare of all beings. Rāhulabhadra's Bodhisattvagocarapariśuddhisūtrārthasaṃgraha (D3965) takes its title from this concept: the "purified domain of the bodhisattva" is not a special place but ordinary life lived with awakened intention.

Hārītī (हारीती, Tibetan: འཕྲོག་མ, 'phrog ma) — "She who steals." A yakṣiṇī (female nature spirit) who, according to Buddhist tradition, was originally a child-devouring demoness — mother of five hundred sons, she seized and ate the children of Rājagṛha to feed them. The Buddha hid her youngest son under his begging bowl; when Hārītī wept, he taught her that the grief she felt for one child was the grief of every mother whose children she had taken. She converted, took refuge, and became a protectress of children and a guardian of the Dharma. In the Sarvāstivāda Vinaya tradition, she is invoked alongside Mahākāla in the monastic confession rite (Āpattideśanāvidhi, D3973): the confessing monk asks forgiveness not only from the saṅgha but from Hārītī and her five hundred sons — acknowledging that transgressions cause harm even to the converted spirits who protect the teaching. Her cult was widespread across Buddhist Asia; images of Hārītī holding a child and a fruit (symbol of abundance) are found from Gandhāra to Japan.

Kṣaṇa-bhaṅga (क्षणभङ्ग, Tibetan: སྐད་ཅིག་མའི་འཇིག་པ, skad cig ma'i 'jig pa) — "Momentary destruction" or "momentary-destruction-impermanence." A technical Abhidharma distinction between two kinds of impermanence: destruction-impermanence (འཇིག་པའི་མི་རྟག་པ, the eventual disintegration of all compounded things, extending up to the Peak of Existence) and momentary-destruction-impermanence (the fact that all phenomena are ceasing and arising in every instant, producing dissimilar results through continuous operation). Vasubandhu's Shastragatharthasamgraha (D4103, verse 4) maps these to the Buddha's words: "thoroughly shaken" refers to destruction-impermanence; "thoroughly agitated" refers to momentary-destruction-impermanence. The second is subtler and more fundamental — not the collapse of buildings but the flickering of every atom in every moment.

Lumbinī (लुम्बिनी, Tibetan: ལུམ་བི་ནི, lum bi ni) — The garden grove where the historical Buddha was born, located in what is now the Rupandehi District of southern Nepal. In traditional accounts, Queen Māyādevī journeyed to Lumbinī with her royal retinue and gave birth standing, grasping a branch of an Aśoka tree. The newborn immediately took seven steps, and at each step a lotus appeared. The Buddhābhiṣekanāmastotra (D1161) narrates the birth as a cosmic event: the child emerges "like the rising sun," the gods descend to pour consecration water from golden vases, the earth trembles in six ways, flowers rain from the sky, and every sick being in the world is healed. The site was identified by the Aśokan pillar erected c. 249 BCE and is now a UNESCO World Heritage Site.

Pariśuddhi (परिशुद्धि, Tibetan: ཡོངས་སུ་དག་པ, yongs su dag pa) — "Complete purification" or "thorough purity." The prefix pari- (thoroughly, completely) intensifies śuddhi (purity, cleansing), indicating not partial but total transformation. In the Bodhisattva literature, pariśuddhi refers to the purification of the bodhisattva's entire domain of activity (gocara) — the transformation of every mundane act into a vehicle for awakening. In Rāhulabhadra's Bodhisattvagocarapariśuddhisūtrārthasaṃgraha (D3965), twenty-four daily activities (waking, opening doors, walking, bathing, eating, reading, making offerings, sleeping) are each accompanied by an aspiration that turns them from ordinary acts into practices of the path. The purification is not ritual but intentional — the domain becomes pure not by changing the world but by changing the orientation of mind within it.

Trichiliocosm (त्रिसाहस्रमहासाहस्रलोकधातु, Tibetan: སྟོང་གསུམ་གྱི་སྟོང་ཆེན་པོའི་འཇིག་རྟེན་གྱི་ཁམས, stong gsum gyi stong chen po'i 'jig rten gyi khams) — "The three-thousandfold great thousandfold world system." The full extent of the Buddhist cosmos as mapped by Abhidharma. A single world system contains one sun, one moon, one Mount Sumeru, four continents, and realms from the hells to the Brahma worlds. A thousand such systems make a "first-order thousandfold world system." A thousand of those make a "second-order middling thousandfold world system." A thousand of those make the trichiliocosm — one billion world systems, all arising and perishing simultaneously, "like rain falling from the sky in streams thick as plow handles, without interval or interruption." The image in Vasubandhu's Shastragatharthasamgraha (D4103) is of cosmic destruction and formation happening at every point in space at once — some worlds perishing, some standing empty, some forming, some enduring — in a pattern that has no beginning and no edge.

Śaṅkarananda (शङ्करानन्द, Tibetan: བདེ་བྱེད་དགའ་བ, bde byed dga' ba, "Joy of the Beneficent One") — A 10th-century Indian Buddhist logician of the Pramāṇa tradition, active in the period between Dharmottara and the destruction of the great monasteries. Two of his works survive in the Degé Tengyur: the Pratibandhasiddhi ("Establishing Relations," D4263) and the Sambandhaparīkṣānusāra ("Following the Examination of Relations," D4237). Both treat the problem of how distinct things can be related — the question Dharmakīrti raised in his Sambandhaparīkṣā (D4214). The Sambandhaparīkṣānusāra is a comprehensive supplement running ~11 folios, systematically refuting every proposed type of real relation: conjunction, inherence, cause-effect, agent-action, grasped-grasper, blending of natures, and the Naiyāyika concept of "suitability" (yogyatā). His method combines verse summaries with prose argumentation, and he draws examples from everyday life — the bowl and the yogurt, the weaver and the cloth, the fire and the smoke — to make abstract logical points vivid. His colophon does not name his monastery or teachers, leaving his biographical details uncertain. Both texts are in the Good Work Library as first English translations.

Śākyaśrībhadra (शाक्यश्रीभद्र, Tibetan: ཤཱཀྱ་ཤྲཱི་བྷ་དྲ, shAkya shrI bha dra) — "Glorious Auspicious One of the Śākya Clan." A Kashmiri Buddhist master (1127–1225 CE), one of the last great Indian paṇḍitas. When the Islamic conquests destroyed the monasteries of northern India — including Vikramaśīla and Odantapurī — Śākyaśrībhadra fled to Tibet around 1204, where he spent the last two decades of his life traveling and teaching. He ordained monks, transmitted lineages, and composed instructional verses tailored to the capacity of each audience he encountered. He was called "the future Buddha" (ma byon pa'i sangs rgyas) by his Tibetan disciples. His Mahāyānopadeśagāthā (Verses of Instruction on the Great Vehicle, D3963) in the Tengyur collects these scattered teachings into a single text — a compressed path-manual covering merit, emptiness, compassion, impermanence, contentment, and the inseparability of wisdom and compassion. The Tibetan translation was made by the master himself together with the translator Byams pa'i dpal. He represents the living bridge between Indian Buddhism and Tibet — the last hand that passed the flame directly.

Sugatāśrīmitra (सुगतश्रीमित्र, Tibetan: བདེ་བར་གཤེགས་པ་དཔལ་བཤེས་གཉེན, bde bar gshegs pa dpal bshes gnyen) — "Friend of the Glory of the Sugata." An Indian paṇḍita who served as one of the great translators at the Tibetan imperial court. He collaborated with the Tibetan translator-monk Tshulkhrims Rgyal-mtshan on the Tibetan rendering of Vairocanarakṣita's Śiṣyalekha-ṭīpaṇa (Difficult Commentary on the Letter to a Student, D4191), among other works. His name appears in the colophons of several Tengyur texts as "the great Indian paṇḍita" (rgya gar gyi mkhan po paṇḍi ta chen po), indicating high scholarly standing.

Śūnyatāsaptativṛtti (शून्यतासप्ततिवृत्ति, Tibetan: སྟོང་པ་ཉིད་བདུན་ཅུ་པའི་འགྲེལ་པ, stong pa nyid bdun cu pa'i 'grel pa) — "Commentary on the Seventy on Emptiness." Nāgārjuna's auto-commentary on his Śūnyatāsaptati (Seventy Verses on Emptiness, D3827), one of the Five Collections of Reasoning. Preserved in the Degē Tengyur (D3831), Volume 096, folios 110a.4—121a.3, in the Madhyamaka section. The commentary explains each of the seventy-three root verses through the debate format: an opponent raises objections drawn from Abhidharma categories, sūtra quotations, and common sense, and Nāgārjuna responds with Madhyamaka reasoning. Major topics include the impossibility of arising, the emptiness of the twelve links of dependent origination, the analysis of the three times, the refutation of the conditioned and unconditioned, the emptiness of karma, form, and the sense bases, and the nature of nirvāṇa as neither entity nor non-entity. The text concludes with the Tathāgata's emanation analogy and the declaration that whoever understands dependent arising through reason, abandoning entity and non-entity, finds peace. The Sanskrit original is lost. Translated into Tibetan by the Indian paṇḍita Jinamitra and the monk Yeshe De.

Ṭīpaṇa (Tibetan: དཀའ་འགྲེལ, dka' 'grel) — "Difficult commentary" or "word-by-word gloss." A genre of Indian Buddhist commentary that illuminates a root text by defining each significant term, typically in the format "[word] means [definition]." The Tibetan translation dka' 'grel literally means "commentary on the difficult points." Unlike a vṛtti (running commentary) which explains the argument, or a bhāṣya (exposition) which elaborates the philosophy, a ṭīpaṇa functions as a glossarial key — unlocking the vocabulary so that the reader can then engage the root text directly. The genre preserves ancient Indian scholastic reading practices and is invaluable for understanding how Buddhist technical terms were understood at the time of composition.

Trilakṣaṇa (त्रिलक्षण, Tibetan: མཚན་ཉིད་གསུམ, mtshan nyid gsum) — "Three marks" or "three characteristics." The three defining characteristics of conditioned phenomena (saṃskṛta) in Buddhist Abhidharma: arising (utpāda, སྐྱེ་བ), abiding (sthiti, གནས་པ), and cessation (bhaṅga, འཇིག་པ). In Madhyamaka analysis, these three are systematically dismantled: what has already arisen does not arise again; what has not arisen cannot be said to arise; what abides does not need to abide; what does not abide also does not; and the same for cessation. Nāgārjuna's Śūnyatāsaptativṛtti (D3831) concludes that because these three marks are untenable under analysis, there is nothing conditioned whatsoever — and because the unconditioned is defined as the reverse of the conditioned, nothing unconditioned either.

Vairocanarakṣita (वैरोचनरक्षित, Tibetan: རྣམ་པར་སྣང་མཛད་འོད་སྲུང, rnam par snang mdzad 'od srung) — "Protected by Vairocana" or "Guardian of the Light of the Illuminator." An Indian Buddhist master (ācārya) and author of the Śiṣyalekha-ṭīpaṇa (Difficult Commentary on the Letter to a Student, D4191), a word-by-word commentary on Candragomin's celebrated Śiṣyalekha (Letter to a Student, D4183). The commentary opens with homage to Tārā and an author's verse explaining its purpose: to clarify the difficult words of the root text so that "the ignorance of foolish beings" may be dispelled. The work glosses approximately 400 terms from Candragomin's verse epistle, covering the full range of the root text's topics — from the qualities of the Buddha and the nature of the Dharma through the sufferings of the hell realms, the deceptions of heavenly pleasure, and the urgency of the bodhisattva path. The Sanskrit original is lost. Translated into Tibetan by Sugatāśrīmitra and Tshulkhrims Rgyal-mtshan.

Viparyāsa (विपर्यास, Tibetan: ཕྱིན་ཅི་ལོག, phyin ci log) — "Distortion," "inversion," or "error." The four fundamental cognitive distortions (catuṣ-viparyāsa) that sustain saṃsāric existence: perceiving what is impermanent as permanent, what is suffering as bliss, what is without self as self, and what is impure as pure. In Nāgārjuna's Śūnyatāsaptativṛtti (D3831), these distortions are shown to be groundless: since permanence does not exist, its antidote — impermanence — also does not exist, and likewise for the remaining three pairs. Without the distortions, the ignorance born from them cannot arise; without that ignorance, the twelve links of dependent origination do not arise. The analysis of the four viparyāsa thus provides the key mechanism linking the emptiness of all phenomena to the cessation of the cycle of existence. Mātṛceṭa's Caturviparyayakathā (D4169) is a complete philosophical poem devoted exclusively to dismantling these four inversions through vivid imagery — dogs gnawing dry bones and tasting only their own blood, a condemned man garlanded with flowers approaching the killing ground, the mirage-water from which the thirsty world tries to drink.

Vigrahavyāvartanīvṛtti (विग्रहव्यावर्तनीवृत्ति, Tibetan: རྩོད་པ་བཟློག་པའི་འགྲེལ་པ, rtsod pa bzlog pa'i 'grel pa) — "Commentary on Turning Back Disputes." Nāgārjuna's auto-commentary on his Vigrahavyāvartanī (Refutation of Objections, D3828), one of the Five Collections of Reasoning. Preserved in the Degē Tengyur (D3832), Volume 096, folios 121a.4—132a, in the Madhyamaka section. The text presents a sustained debate in which an opponent poses twenty objections to the Madhyamaka thesis that all things lack intrinsic nature: if everything is empty, then Nāgārjuna's own words are empty and cannot refute anything; his means of valid knowledge are empty and cannot establish anything; his thesis has no ground. Nāgārjuna responds to each objection from within, showing that emptiness is not a deficiency but the condition of possibility for all function: just as a magical emanation can stop another emanation, empty words can refute intrinsic nature precisely because they are empty. The crown verse—"For whom emptiness is possible, all things are possible; for whom emptiness is not possible, nothing is possible"—is among the most cited lines in Buddhist philosophy. The Sanskrit original is lost. Translated into Tibetan by the Indian master Jnānagarbha and the translator Dpal brtsegs rakṣita.

Saddharmavipralopa (सद्धर्मविप्रलोप, Tibetan: དམ་པའི་ཆོས་འཇིག་པ, dam pa'i chos 'jig pa) — "The decline of the True Dharma." A Buddhist eschatological concept describing the progressive fading and disappearance of the Buddha's authentic teachings from the world. The Satyakṛtyadharmavacana-kathā (D4172) devotes its longest passage to this theme, cataloguing eleven metaphors for how the Dharma vanishes: like a lamp guttering in the wind, like a painting worn from a wall, like a drum whose sound fades to nothing, like a fish taken from water, like a great tree whose root is severed, like medicine whose potency is exhausted. The text frames the decline not as a single catastrophe but as a gradual dimming — each metaphor captures a different mode of loss (brilliance, visibility, resonance, vitality, structural integrity, efficacy). The concept is canonical: the Buddha himself predicts the decline in numerous sūtras, typically in three stages — the decline of practice (pratipatti), the decline of realization (adhigama), and the decline of the textual tradition (āgama). The urgency of this decline is the motivation behind the text's central teaching: that teaching and hearing the Dharma are the two most meritorious activities, because they are what keeps the lamp lit.

Subhutighosha (Tibetan: རབ་འབྱོར་དབྱངས, rab 'byor dbyangs) — "Voice of Subhuti." An Indian Buddhist Brahmin scholar and master (acharya), author of the Dasha-kushala-karma-patha-nirdesha ("Teaching on the Path of the Ten Wholesome Actions," Toh 4176) preserved in the Dege Tengyur. The text is a systematic Abhidharma-style ethical treatise analyzing the ten wholesome and unwholesome paths of action. The work quotes extensively from sutras (the Bodhisattva Collection, the Gandavyuha, the Tathagatagarbha Sutra) and from Nagarjuna and the Abhidharmakosa, and concludes with the notable teaching that bodhisattvas may, out of compassion, be permitted to commit certain physical and verbal non-virtues — an early statement of the Mahayana ethical principle that the bodhisattva's motivation can transform the moral character of an action. The Sanskrit original is lost; the Tibetan was translated by the Indian pandita Buddhakara(varma) and the Tibetan translator-monk Dharmaprajna.

Acintyastava (अचिन्त्यस्तव, Tibetan: བསམ་གྱིས་མི་ཁྱབ་པར་བསྟོད་པ, bsam gyis mi khyab par bstod pa) — "Praise of the Inconceivable." The fourth and longest of Nāgārjuna's Catuḥstava (Four Hymns), Tohoku 1128. The most comprehensive of the four: a systematic devotional treatment of the full sweep of Madhyamaka thought, from the identity of dependent arising and emptiness to the fourfold negation of arising, the mutual dependence of self and other, the analysis of the senses as inert and mistaken, the magical elephant of primordial peace, the three natures (parikalpita, paratantra, pariniṣpanna), and the final crescendo of the lion's roar of selflessness, the great drum of emptiness, and the dharma conch of essencelessness. The title names not a failure of thought but a feature of reality: what is praised here cannot be conceived because conception requires the duality that Nāgārjuna dissolves.

Ahaṃkāra (अहंकार, Tibetan: ངར་འཛིན, ngar 'dzin) — "I-making" or "ego-grasping." The mental act of constituting a self — the reflexive gesture by which consciousness designates itself as an "I." In Madhyamaka, ahaṃkāra arises in dependence upon attachment to self (ātmagrāha) and ceases when that attachment is pacified. It is paired with mamakāra (my-making): together they form the twin mechanisms of self-clinging. The Akutobhayā's Chapter 18 (Examination of Self and Dharma) traces the chain: when the self is shown to be neither identical with nor different from the aggregates, the self is untenable. If the self is untenable, "mine" is untenable. When self and mine are pacified, ahaṃkāra and mamakāra cease. This cessation — the complete pacification of I-making and my-making — is the nature of reality (tattva). Importantly, even the one who has overcome ahaṃkāra is not then "someone who is free from I-making" — that too would be a view to cling to. The dissolution is total.

Mamakāra (ममकार, Tibetan: ང་ཡིར་འཛིན, nga yir 'dzin) — "My-making" or "mine-grasping." The mental act of appropriating things as "mine" — possessions, relationships, achievements, states of mind. Where ahaṃkāra constructs the "I," mamakāra extends that construction outward into ownership. The two arise and cease together: mamakāra depends on ahaṃkāra (if there is no self, whose possessions could these be?), and ahaṃkāra is sustained by mamakāra (the self is reinforced by everything it claims). When the Akutobhayā states that being free from self and mine is the nature of reality, it is describing the cessation of both mechanisms simultaneously — not as an achievement but as the recognition that neither was ever established.

Ālambana (आलम्बन, Tibetan: དམིགས་པ, dmigs pa) — "Referent," "support," or "object of apprehension." In Buddhist epistemology and meditation theory, the ālambana is the object to which mind directs itself — the thing perceived, grasped, or taken as a reference point. Dignāga's Ālambanaparīkṣā ("Examination of the Object of Cognition," D4205) and its auto-commentary the Ālambanaparīkṣā-vṛtti (D4206) form the definitive treatment: it establishes that a genuine ālambana must satisfy two criteria — it must cause the cognition, and the cognition must appear in its likeness. Atoms satisfy the first but not the second; aggregates satisfy the second but not the first. The conclusion is that the true ālambana is internal — an appearance within consciousness that merely seems external. In Madhyamaka, the progressive abandonment of ālambana is the path from dualistic perception to non-dual awareness: as long as the mind has a referent, it is caught in the subject-object split. Nāgārjuna's Bhāvasaṃkrāntiparikaṭhā (D4162) states the practice precisely: "Having freed the mind from any referent, one will come to be without referent" (blo ni dmigs pa med byas nas / dmigs pa med par 'byung bar 'gyur). The term also appears in Yogācāra as a technical component of consciousness (vijñāna): every moment of awareness has an ālambana, an ākāra (aspect), and a pratyaya (condition). The Madhyamaka critique is that ultimately, no ālambana can be established as real — and the recognition of this is itself the non-referential awareness that the tradition calls prajñāpāramitā.

Anityārtha-parikathā (अनित्यार्थपरिकथा, Tibetan: མི་རྟག་པའི་དོན་གྱི་གཏམ, mi rtag pa'i don gyi gtam) — "Advice on the Meaning of Impermanence." A short Buddhist verse epistle attributed to the Indian poet Rāmendra (དགའ་བའི་དབང་པོ, "Lord of Delight"), preserved in the Degé Tengyur (Toh 4174) in the Epistles section (སྤྲིང་ཡིག). In five verses the poet builds from the image of dewdrops on grass — impermanent because conditions change them — through the universality of death (no being in any realm escapes "the jaws of the vulture of Death"), to the radical claim that even freedom from desire has never been seen to last. The final verse quotes the Buddha's words on the essential aloneness of saṃsāric existence: "Life is impermanent, like patterns drawn on water. These beings, when born, are born alone. Likewise, when they die, they die alone." The first text from the Epistles section to be translated into English.

Antarābhava (अन्तराभव, Tibetan: བར་མ་དོའི་སྲིད་པ, bar ma do'i srid pa; also ཉིང་མཚམས་སྦྱོར་བ, nying mtshams sbyor ba, "linking") — "Intermediate existence" or "the between-state." The transitional state between death and rebirth posited by certain Buddhist schools (notably the Sarvāstivāda and later the Yogācāra) and denied by others (the Theravāda). The Akutobhayā's Chapter 21 (Examination of Arising and Perishing) introduces the concept through the Tibetan term ཉིང་མཚམས་སྦྱོར་བ (nying mtshams sbyor ba, literally "linking at the life-juncture") — the supposed mechanism that connects one life to the next. The chapter's opponent argues that arising and perishing must be real because something links successive existences; Nāgārjuna responds that the linking itself cannot be established: if the being who dies and the being who is reborn are the same, no linking is needed; if different, no linking is possible; and if neither, the concept dissolves entirely. The argument demonstrates that the continuum (saṃtāna) of lives, like the continuum of moments within a single life, cannot withstand analysis — not because rebirth is denied, but because no mechanism of rebirth can be established as ultimately real.

Anyonyavyāvṛtti (अन्योन्यव्यावृत्ति, Tibetan: ཕན་ཚུན་ལོག་པ, phan tshun log pa) — "Mutual exclusion." The mechanism by which individual particulars of the same kind are recognized as belonging together without positing a positive universal that connects them. In Śaṅkarananda's Āpoha-siddhi (D4256), mutual exclusion resolves the "piebald cow and black cow" problem: when one cognizes "this is a cow, this is another cow," the recognition does not proceed through some positive cow-nature (go-tva/sāmānya) connecting the two. Rather, it proceeds through the mutual exclusion of each from non-cow — the piebald cow excludes non-cow, the black cow excludes non-cow, and this shared pattern of exclusion is what underwrites the recognition of both as cows. The concept is critical because it explains how general concepts function without requiring real universals: the "experientially established difference through mutual differentiation of groups" (cow-group vs. horse-group, cow-group vs. pot-group) is sufficient. Mutual exclusion is distinct from simple exclusion (anyāpoha) in that it operates bidirectionally between members of a class, not just unidirectionally from a class to its complement.

Anyathābhāva (अन्यथाभाव, Tibetan: གཞན་དུ་འགྱུར་བ, gzhan du 'gyur ba) — "Alteration," "being otherwise," or "change of state." A key term in Madhyamaka philosophical analysis denoting the transformation of a thing into something other than what it is. The Akutobhayā's Chapter 13 (Examination of Reality) builds its central argument around the impossibility of anyathābhāva: if a thing possesses self-nature (svabhāva), alteration is impossible — for self-nature by definition does not change. But if it lacks self-nature, there is nothing present that could be said to undergo alteration. The youth-and-elder paradox illustrates the bind: if a youth and an elder are the same person, youth itself would possess aging — an absurdity. If they are different, the elder would arise without depending on the youth — equally absurd. The milk-and-curds analogy extends the argument: if curds are identical to milk, the curds were already present in the milk (and the transformation was illusory); if different, curds arise from something wholly other than themselves. Neither option establishes real alteration. The term is the conceptual bridge between the analysis of svabhāva and the conclusion that all conditioned things are empty.

Aṣṭaduḥkhatā (अष्टदुःखता, Tibetan: སྡུག་བསྔལ་བརྒྱད, sdug bsngal brgyad) — "The Eight Kinds of Suffering." A classical Buddhist enumeration of the fundamental sufferings of cyclic existence: (1) birth, (2) aging, (3) sickness, (4) death, (5) encountering what is hated, (6) separation from what is loved, (7) not obtaining what is sought, and (8) the suffering inherent in the five aggregates themselves. The first four are universal biological facts; the last four are structural features of conditioned existence. The eight appear in the Dhammacakkappavattana Sutta as the Buddha's explication of the First Noble Truth (dukkha). Kamalaśīla's Teaching on the Eight Kinds of Suffering (D4193) gives the most vivid surviving Indian Buddhist treatment: the suffering of birth is being thrown into thorns, aging is seeing one's reflection and being frightened as by a ghost, seeking what one lacks becomes a full portrait of the merchant's life — deceived, robbed, beaten, arriving home to dark smiles. The eight are not merely listed but inhabited, making D4193 a rare pastoral counterpart to the doctrinal formulation.

Avadāna (अवदान, Tibetan: རྟོགས་པ་བརྗོད་པ, rtogs pa brjod pa) — "Heroic deed" or "noble narrative." A genre of Buddhist didactic literature that teaches through exemplary stories — moral tales in which a virtuous act in a past life produces karmic fruit in the present, or in which a lay practitioner demonstrates the power of right conduct through debate, generosity, or devotion. The avadāna genre flourished in the Sarvāstivāda and Mūlasarvāstivāda schools of Gandhāra and Kashmir, producing major collections such as the Avadānaśataka ("Century of Noble Deeds"), the Divyāvadāna ("Divine Noble Deeds"), and the Aśokāvadāna ("Noble Deeds of Ashoka"). Unlike the Jātaka tales, which recount the Buddha's own past lives, avadānas focus on the deeds of disciples, laypeople, and ordinary beings whose actions illustrate the workings of karma. The Degé Tengyur preserves several avadānas in the Epistles section (སྤྲིང་ཡིག), including the Garland of Examples (Dpe yi phreng ba, D4196) — a Sarvāstivāda narrative set in ancient Gandhāra in which a Buddhist layman debates Brahmin priests on the nature of true worship, demonstrating that the Buddha surpasses all other teachers through compassion and wisdom rather than ritual power.

Avipranāśa (अविप्रणाश, Tibetan: ཆུད་མི་ཟ་བ, chud mi za ba) — "The Imperishable." A distinctive Madhyamaka concept introduced in Chapter 17 of the Mūlamadhyamakakārikā and its commentaries. The avipranāśa is neither a substance nor a permanent entity but a dharma posited to explain how karmic results arise from actions that have already ceased — without resorting to either a permanent self (ātman) that carries karma or a nihilistic view that actions simply vanish. The Akutobhayā describes it through the analogy of a promissory note (ṛṇapatraka): just as a debt recorded on paper is neither the money itself nor nothing, the imperishable dharma preserves the relationship between action and result without being a "thing" that transmigrates. Crucially, the avipranāśa itself is empty — it has no self-nature (svabhāva), it neither arises nor ceases in the ultimate sense, and it is likened to a gandharva-city (mirage-city). Its function is to account for karmic continuity within a framework of universal emptiness: action does not perish, yet nothing permanent carries it forward. The concept addresses the central problem of Buddhist ethics — how can moral responsibility obtain if there is no enduring agent? — without abandoning the Middle Way between eternalism and nihilism.

Avisaṃvāda (अविसंवाद, Tibetan: མི་སླུ་བ, mi slu ba) — "Non-deception." The defining characteristic of valid cognition (pramāṇa) in Dharmottara's epistemology. A cognition is valid if and only if it does not deceive regarding the practical function (arthakriyā) of its object — meaning that what it ascertains can actually be attained as ascertained. The concept is negative by design: valid cognition is not defined by some positive quality of accuracy or correspondence, but by the absence of deception in the relationship between ascertainment and attainment. In the Pramāṇaparīkṣā (D4248), Dharmottara builds the entire architecture of valid cognition around non-deception: a cognition that ascertains an object's place, time, and nature without deception regarding practical function enables engagement, which enables attainment. Erroneous cognition — such as seeing a conch shell as yellow, or water in a mirage — fails precisely because it is deceptive: the object of engagement as ascertained does not exist, and therefore attainment is impossible. The criterion is strict: even a cognition that grasps a real object may fail as valid cognition if it deceives regarding the specific aspect under which the object is ascertained. Non-deception is thus not merely "getting it right" but the functional reliability of cognition as a guide to action.

Bhagavan (भगवन्, Pāli: Bhagavā, Tibetan: བཅོམ་ལྡན་འདས, bcom ldan 'das) — "Blessed One" or "Conqueror." The most common form of address for the Buddha in Buddhist literature, and the first word of the nine-epithet recollection formula (Buddhānusmṛti). Vasubandhu's Buddhānusmṛti-ṭīkā (D3987) explains the term through etymological analysis: "one who possesses conquest" — demonstrating the overcoming of obstacles, specifically the māra of the divine son, whose defeat enabled the Buddha to obtain the perfection of teacherhood. The Tibetan rendering bcom ldan 'das literally means "one who has conquered (bcom), possesses (ldan), and transcended ('das)" — a triple analysis not present in the Sanskrit original but reflecting the richness of the Tibetan translation tradition.

Bhāvābhāva-parīkṣā (भावाभावपरीक्षा, Tibetan: དངོས་པོ་དང་དངོས་མེད་བརྟག་པ, dngos po dang dngos med brtag pa) — "Examination of Entity and Non-Entity." Chapter 15 of the Mūlamadhyamakakārikā and the Akutobhayā. The philosophical climax of the Root Verses' middle section: having refuted specific categories (conditions, motion, aggregates, elements, fire, samsara, suffering, reality, contact), the analysis turns to the concepts of existence and non-existence themselves. The chapter opens by defining svabhāva (self-nature) as that which does not arise from causes and conditions and is not dependent on another — then shows that nothing meets this definition, since all phenomena arise dependently. If self-nature is not established, neither is parabhāva (other-nature), since other-nature is simply the self-nature of another. Without entity (bhāva), non-entity (abhāva) cannot be established, since non-entity is merely the alteration of entity. The chapter's central moment is the citation of the Kātyāyanāvavāda Sūtra — the Buddha's instruction to Kātyāyana that the Dharma rests neither on existence nor non-existence — which Nāgārjuna uses to demonstrate that the Middle Way transcends the four extremes: existence, non-existence, both, and neither. The concluding verses declare that those who perceive self-nature and other-nature, entity and non-entity, do not see the truth in the Buddha's teaching. The eleven root verses of Chapter 15 are the doctrinal foundation on which Chapter 24 (Examination of the Noble Truths) and Chapter 25 (Examination of Nirvana) are built.

Bhadrakalpa (भद्रकल्प, Tibetan: བསྐལ་བཟང, bskal bzang) — "The Fortunate Aeon." The present cosmic age in Mahāyāna Buddhist cosmology, during which one thousand Buddhas will appear in sequence to turn the Dharma wheel. The name derives from the exceptional fortune of having so many Buddhas arise in a single age — most kalpas pass without any Buddha appearing at all. The Bhadrakalpika-sūtra enumerates each Buddha with fifteen attributes: realm, lineage, radiance, father, mother, son, ritual, wisdom, miraculous powers, assembly, lifespan, duration of teaching, relics, stūpas, and manner of generating bodhicitta. Śākyamuni is the fourth Buddha of this aeon; Maitreya will be the fifth. The Kashmiri paṇḍita Śākyaśrībhadra composed a liturgical garland (D1169 in the Degé Tengyur) reciting all one thousand names in verse. The concept of the Bhadrakalpa underscores the Mahāyāna teaching that awakening is not singular but recurring — the Dharma wheel turns, stops, and turns again across vast stretches of time.

Bodhibhadra (बोधिभद्र, Tibetan: བྱང་ཆུབ་བཟང་པོ, byang chub bzang po) — "Excellent Awakening." A major Indian Buddhist philosopher of the tenth century CE, active at Vikramaśīla monastery. Best known as one of the teachers of Atiśa Dīpaṃkaraśrījñāna, the Bengali master whose journey to Tibet in 1042 CE inaugurated the Later Diffusion of Buddhism in Tibet. Bodhibhadra's principal surviving work is the Jñānasārasamuccayabhāṣya (D3852), a comprehensive prose commentary on Āryadeva's Jñānasārasamuccaya (D3851), in which he systematically surveys every major Indian philosophical school — Śaiva, Sāṃkhya, Brahmanist, Jain, Lokāyata, and the four Buddhist tenet systems — culminating in the Madhyamaka freedom from the four extremes. The commentary is notable for its narrative richness, including the prophecy of Nāgārjuna from the Laṅkāvatārasūtra and the story of Āryadeva giving his eye to a Brahmin woman. The Sanskrit original is lost; the Tibetan translation was made by paṇḍita Śāntibhadra and translator-monk Chökyi Sherab (Prajñādharma). Bodhibhadra also composed the Bodhisattvasaṃvaravidhi (D3967), a ceremonial liturgy for formally receiving the bodhisattva's threefold moral discipline — the morality of restraint, the morality of gathering wholesome qualities, and the morality of acting for the benefit of beings — translated by Sunāyaśrīmitra and Dharmagrags.

Bodhipakṣya dharma (बोधिपक्षधर्म, Tibetan: བྱང་ཆུབ་ཕྱོགས་ཀྱི་ཆོས, byang chub phyogs kyi chos) — “Factors conducive to awakening.” The thirty-seven factors (dharmas) that constitute the path to awakening in Buddhist soteriology, organized in seven groups: four close placements of mindfulness, four correct abandonments, four bases of miraculous power, five faculties, five powers, seven factors of awakening, and the noble eightfold path. They map progressively to the five paths from accumulation through meditation.

Buddha (बुद्ध) — "Awakened One." One who has attained complete enlightenment — full understanding of the nature of reality, the cessation of suffering, and liberation from the cycle of rebirth. In Theravāda Buddhism, the term refers primarily to Siddhārtha Gautama (c. 5th century BCE), the historical Buddha of this age. In Mahāyāna thought, buddhahood is the ultimate potential of all sentient beings. The word derives from the Sanskrit root budh, to awaken.

Buddhānusmṛti (बुद्धानुस्मृति, Tibetan: སངས་རྒྱས་རྗེས་སུ་དྲན་པ, sangs rgyas rjes su dran pa) — "Recollection of the Buddha." The first and most extensive of the Three Recollections (Buddhānusmṛti, Dharmānusmṛti, Saṅghānusmṛti), a foundational Buddhist devotional practice in which the practitioner calls to mind the nine epithets of the Bhagavan: Tathāgata, Arhat, Perfectly Awakened One, Endowed with Knowledge and Conduct, Sugata, Knower of the World, Unsurpassed Charioteer Who Tames Beings, Teacher of Gods and Humans, Buddha, Bhagavan. The formula is recited across all Buddhist traditions. Asaṅga's commentary on this formula (Tohoku D3982, Degé Tengyur) systematically explains each epithet: "Bhagavan" demonstrates the cutting of bonds through the defeat of Māra; "Tathāgata, Arhat, Perfectly Awakened One" demonstrates the Teacher's twofold perfection of teaching and realization — teaching without distortion (Tathāgata), perfection of abandonment (Arhat), and perfection of wisdom (Perfectly Awakened One); "Endowed with Knowledge and Conduct" teaches the cause of the Teacher's perfection through the three trainings; "Sugata" demonstrates the irreversibility and completeness of realization; "Knower of the World" and "Unsurpassed Charioteer" show the twofold activity of surveying beings and taming those with fortune; "Teacher of Gods and Humans" identifies those to whom he teaches; and "Buddha" is analyzed etymologically as possessing the three perfections of abandonment, compassion, and wisdom. The commentary concludes by asserting that the term "Buddha" is connected to each of the nine phrases individually.

Byāmaprabhā (व्यामप्रभा, Tibetan: འདོམ་གང་འོད, 'dom gang 'od) — "Fathom-light" or "fathom's radiance." The luminous aura said to emanate from the Buddha's body, extending one fathom (the distance of both arms outstretched) in every direction. Listed among the eighty minor marks (anuvyañjana) of a fully awakened being. The anonymous Sarvatathāgatastotram (D1151) praises the Tathāgatas as those "whose bodies are adorned with a fathom's radiance" (sku la 'dom gang 'od kyis brgyan). The image unites the physical and the metaphysical: the light is real enough that Brahmā and Indra bow before it, yet it is the radiance of wisdom made visible — the inner quality shining through the body as proof that defilement has been completely burned away.

Guru Lekha (Tibetan: བླ་མ་ལ་སྤྲིང་བ, bla ma la spring ba) — "Letter to a Spiritual Teacher." A four-chapter didactic epistle in the Degé Tengyur (Toh 4186), Epistles section, composed by the Indian Buddhist forest-monk Parahitaghoṣa Āraṇyaka ("Voice that Benefits Others"). A student writes to a learned teacher, humbly offering a condensed guide to renunciation drawn extensively from the Dhammapada and canonical Buddhist sources. The four chapters systematically address: (1) abandoning desire, illustrated by the five animals destroyed by the five senses (deer by sound, elephant by touch, moth by sight, fish by taste, bee by smell); (2) abandoning craving, with the images of the creeping vine, the monkey seeking fruit, and the rabbit chased into a snare; (3) abandoning heedlessness, echoing the Dhammapada's "heedfulness is the abode of the deathless, heedlessness is the abode of death" and the cowherd counting another's cattle; (4) abandoning afflictions through the thirty-seven factors of awakening. The text concludes with a complete catalogue of the afflictions from Abhidharma literature. Translated into Tibetan by Vinayacandra and Chökyi Sherab.

Kimpaka (किम्पाक, Tibetan: ཀིམ་པ་ཀ, kim pa ka) — A poisonous fruit with a deceptively beautiful appearance, used in Buddhist literature as a standard metaphor for sensual desires. The fruit looks ripe and appealing but causes sickness or death when eaten. In the Guru Lekha (D4186), desires are compared to kimpaka fruit alongside burning coals, poisonous leaves, iron hooks, thorns, and the edge of a blade. The metaphor also appears in Nāgārjuna's Suhṛllekha and other epistle literature. The botanical identification is uncertain — possibly Trichosanthes cucumerina or Cucumis colocynthis.

Daśabala (दशबल, Tibetan: སྟོབས་བཅུ, stobs bcu) — "The Ten Powers." Ten unique knowledges possessed by a fully awakened Buddha that distinguish a Buddha from all other beings, including Arhats and Bodhisattvas. The list varies slightly across traditions but standardly includes: (1) knowledge of what is possible and impossible, (2) knowledge of the karmic results of actions, (3) knowledge of the various aspirations of beings, (4) knowledge of the various elements and dispositions of beings, (5) knowledge of the higher and lower faculties of beings, (6) knowledge of the paths leading to all destinations, (7) knowledge of the meditation states and liberations, (8) knowledge of previous lives, (9) knowledge of the death and rebirth of beings, and (10) knowledge of the destruction of the defilements. Triratnadāsa's Praise of the Blessed Śākyamuni (D1152) celebrates the Buddha as "possessing the supreme ten powers" alongside his delight in generosity.

Daśākuśalakarmapatha (दशाकुशलकर्मपथ, Tibetan: མི་དགེ་བ་བཅུའི་ལས་ཀྱི་ལམ, mi dge ba bcu'i las kyi lam) — "The ten non-virtuous paths of action." A foundational Buddhist ethical enumeration of the ten forms of unwholesome conduct, divided into three of body (killing, taking what is not given, sexual misconduct), four of speech (lying, divisive speech, harsh words, idle talk), and three of mind (covetousness, malice, wrong views). Each non-virtue is defined in the Abhidharma tradition by its component factors — typically five or six elements including the object, perception, intent, action, and completion. The reverse — the ten virtuous paths (daśakuśalakarmapatha) — are declared to be the cause of higher rebirth. The teaching derives from the Buddha's extensive treatments in the Foundations of Mindfulness (Smṛtyupasthāna) and Mahāyāna sūtras. Aśvaghoṣa's Daśākuśalakarmapathānirdeśa (D4178) in the Tengyur Epistles section condenses this teaching into a memorizable verse catechism.

Devātideva (देवातिदेव, Tibetan: ལྷ་ཡི་ལྷ, lha yi lha) — "God of gods" or "deity above the deities." A standard epithet of the Buddha in both Pāli and Sanskrit Buddhist literature, emphasizing that the Buddha surpasses all celestial beings — including Brahmā, Indra, and the devas of the desire and form realms — not through divine power but through the depth of his realization. The epithet carries a deliberate subversion: the gods themselves worship him, making the awakened human the supreme being in the cosmos. Triratnadāsa's D1152 praises the Buddha as "supreme god of gods, stainless, freed from all defilement" (ལྷ་ཡི་ལྷ་མཆོག་དྲི་མེད་དྲི་བྲལ་བ).

Dhānyakaṭaka (Sanskrit: धान्यकटक, Tibetan: འབྲས་ཀྱི་ཕུང་པོ, 'bras kyi phung po, "The Rice Heap") — An ancient Buddhist site in South India, modern Amarāvatī in Andhra Pradesh, home to one of the largest stūpas in the Buddhist world. The Tibetan tradition associates Dhānyakaṭaka with the first teaching of the Kālacakra Tantra by the Buddha, making it one of the most sacred sites in Vajrayāna geography. The monastery of Manlung, located near the Great Stūpa of Dhānyakaṭaka, was a center of Buddhist learning where several Tengyur texts were translated into Tibetan — including the Praise of the Holy Guru Puṇyaśrī (D3759), composed there by Paṇḍita Vimalaśrī and translated by Gautamabhadra and Lotsāwa Dragpa Jangchub. The site's Tibetan name, "The Glorious Rice Heap" (དཔལ་ལྡན་འབྲས་ཀྱི་ཕུང་པོ), preserves the Sanskrit etymology: dhānya (rice/grain) + kaṭaka (heap/encampment).

Dharma (धर्म, Pāli: Dhamma) — The teaching of the Buddha; also, the underlying truth or law of reality that the teaching describes. One of the Three Jewels (Buddha, Dharma, Sangha). The word carries multiple registers: cosmic law, moral duty, the path of practice, and the nature of phenomena. In the Buddhacarita, Aśvaghoṣa narrates Siddhārtha's discovery of the Dharma as the turning point of human history.

Dharmānusmṛti (धर्मानुस्मृति, Tibetan: ཆོས་རྗེས་སུ་དྲན་པ, chos rjes su dran pa) — "Recollection of the Dharma." One of the Three Recollections (Buddhānusmṛti, Dharmānusmṛti, Saṅghānusmṛti), a foundational Buddhist devotional practice in which the practitioner calls to mind the qualities of the Dharma. The standard formula, found across Pāli and Sanskrit sources, enumerates the Dharma's qualities: it is well-spoken (svākhyāta), directly visible (sāndiṭṭhika), timeless (akālika), inviting investigation (ehipassika), leading onward (opanayika), and to be individually known by the wise (paccattaṃ veditabbo viññūhi). Asaṅga's commentary on this formula (Tohoku D3983, Degé Tengyur) explains each quality philosophically: "well-spoken" because it is unmistaken; "directly visible" because it is verified through seeing reality itself, not through faith alone; "free from plague" because it is the antidote to afflictions and their latent tendencies; "to be individually known" because it is beyond expression and must be understood within oneself. The Three Recollections are practiced across all Buddhist traditions and remain a cornerstone of lay and monastic devotion.

Lokātītastava (लोकातीतस्तव, Tibetan: འཇིག་རྟེན་ལས་འདས་པར་བསྟོད་པ, 'jig rten las 'das par bstod pa) — "Praise of the World-Transcendent." One of Nāgārjuna's Catuḥstava (Four Hymns), Tohoku 1120. The most philosophical of the four: where the Paramārthastava proceeds by negation and the Nirupamastava celebrates paradox, the Lokātītastava surveys the Buddha's key philosophical teachings — the illusory nature of the aggregates, the impossibility of arising, the dream-like nature of saṃsāra, the equation of dependent arising with emptiness, and the warning against clinging even to emptiness itself. Verse XX contains the core Madhyamaka proclamation: "Whatever arises dependently, that itself you hold to be empty" — named the Buddha's "matchless lion's roar."

Lokavid (लोकविद्, Tibetan: འཇིག་རྟེན་མཁྱེན་པ, 'jig rten mkhyen pa) — "Knower of the World." The seventh of the nine epithets in the Buddha recollection formula (Buddhānusmṛti). Vasubandhu's Buddhānusmṛti-ṭīkā (D3987) explains the term as the Buddha's activity of surveying sentient beings: examining beings in each destiny to determine who has "fortune" (skalpa, the capacity for liberation) and who does not, and responding accordingly — establishing those without fortune on paths of worldly happiness, and guiding those with fortune toward the three lineages of awakening. The epithet thus represents the diagnostic aspect of buddhahood: the Teacher must first understand the world before he can heal it.

Samavāya (समवाय, Tibetan: འདུ་བ, 'du ba) — "Inherence." One of the seven categories (padārtha) of the Vaiśeṣika school — the relation that is supposed to permanently bind a quality to its substance, a universal to its particulars, or a whole to its parts. Unlike conjunction (saṃyoga), which is temporary and between independent things, inherence is held to be eternal and between things where one depends on the other (a colour inhering in a pot, a universal inhering in an individual). Buddhist epistemologists, particularly Dharmakīrti in his Sambandhaparīkṣā (D4214) and Śaṅkarananda in the Sambandhaparīkṣānusāra (D4237), subject inherence to devastating critique: if inherence connects substance and quality, what connects inherence to substance? A further inherence? Then infinite regress. If inherence needs no connector, then neither did the original pair. The Vaiśeṣika response — that inherence is self-connecting (svayam-sambandha) — is shown to be special pleading. Inherence is one of the signature concepts of the Vaiśeṣika ontology; its refutation is a signature achievement of Buddhist logic.

Sambandha (सम्बन्ध, Tibetan: འབྲེལ་པ, 'brel pa) — "Relation" or "connection." The fundamental philosophical question of how distinct things can be related to one another. In the Buddhist Pramāṇa tradition, Dharmakīrti's Sambandhaparīkṣā ("Examination of Relations," D4214) with its auto-commentary (D4215) argues that relations are not ultimately real but are conceptual constructions (vikalpa) projected onto experience. The problem: if two things are genuinely distinct, no third entity can connect them without itself requiring connection, generating infinite regress; if they are not distinct, there is nothing to relate. Śaṅkarananda's Sambandhaparīkṣānusāra ("Following the Examination of Relations," D4237) extends this analysis systematically, dismantling every proposed type of relation — conjunction (saṃyoga), inherence (samavāya), cause-effect, agent-action, grasped-grasper — showing that each either collapses into identity (destroying the relation) or requires a further relation (infinite regress). The conclusion is that the conventional world of related things functions through conceptual thought, not through real ontological connections. Three texts on this topic are in the Good Work Library: D4214, D4215, and D4237.

Santānāntara-siddhi (सन्तानान्तरसिद्धि, Tibetan: རྒྱུད་གཞན་གྲུབ་པ, rgyud gzhan grub pa) — "Proof of Other Mind-streams" or "Establishing the Existence of Other Minds." A short treatise by Dharmakīrti (c. 600–660) and its central argument: that even within the Yogācāra framework of consciousness-only, the existence of other conscious beings can be proven by inference. The problem is this — if all objects of cognition are internal to consciousness, how do we know anyone else exists? Dharmakīrti's answer: we observe in our own experience that actions and speech are preceded by mental intention; we observe appearances of actions and speech in our experience that we did not intend; therefore another mind must be their cause. The argument is elegantly equalizing — it shows that the Externalist's method of inferring other minds (from seeing physical bodies act) works identically for the Yogācārin (from appearances of action in cognition). The treatise also addresses dreams (if actions in dreams lack external causes, why infer minds from waking actions?), yogic direct perception of other minds, and the Buddha's four wisdoms. Vinītadeva's word-by-word commentary (Santānāntara-siddhi-ṭīkā, D4238) is in the Good Work Library as a first English translation.

Samyaksambuddha (सम्यक्सम्बुद्ध, Tibetan: ཡང་དག་པར་རྫོགས་པའི་སངས་རྒྱས, yang dag par rdzogs pa'i sangs rgyas) — "Perfectly Awakened One" or "Fully and Completely Awakened." The fourth of the nine epithets in the Buddha recollection formula (Buddhānusmṛti). In the recollection formula's structure as analyzed by Vasubandhu (D3987), Samyaksambuddha demonstrates the perfection of wisdom — the complement to Arhat's perfection of abandonment. Together with Tathāgata (perfection of teaching), these three epithets establish that the Bhagavan alone has obtained the complete perfection of teacherhood in all its aspects: teaching without error, abandoning all afflictions, and fully awakening to all phenomena.

Dharmadhātu (धर्मधातु, Tibetan: ཆོས་ཀྱི་དབྱིངས, chos kyi dbyings) — "The dharma-expanse" or "the expanse of reality." The ultimate space or ground in which all phenomena arise and dissolve. In Madhyamaka philosophy, dharmadhātu is the nature of reality itself — not a place but the emptiness that pervades all phenomena. When Nāgārjuna writes in the Paramārthastava that by "not abiding in any phenomenon, you have become the nature of the dharmadhātu," he identifies the dharma-expanse not as a destination but as what remains when all fixation ceases. Nāgārjuna's Dharmadhātustava ("Praise of the Dharmadhātu," D1118) is the most sustained meditation on this concept in the Tengyur — approximately one hundred verses tracing how the dharmadhātu, though obscured by afflictions, is never absent from any sentient being, like a lamp inside a vase or a vaidūrya jewel buried in filth. The text bridges Madhyamaka and tathāgatagarbha thought by identifying the dharmadhātu with buddha-nature itself: the same reality that Madhyamaka calls emptiness, tathāgatagarbha teaching calls the innate seed of awakening. The term appears throughout Mahāyāna and Vajrayāna literature as the ground of awakening: not something to be reached but something to be recognized as always already present.

Vaidūrya (वैडूर्य, Tibetan: བཻ་ཌཱུརྱ, bai DUr+ya) — Lapis lazuli or beryl — a deep blue gemstone used throughout Indian Buddhist literature as a metaphor for the innate purity of mind obscured by adventitious defilements. In Nāgārjuna's Dharmadhātustava (D1118), the vaidūrya is the central image: a precious jewel fallen into filth that remains intrinsically pure regardless of its surroundings, just as the dharmadhātu remains luminous regardless of the afflictions that obscure it. The simile appears in parallel in the Tathāgatagarbha Sūtra, where buddha-nature is compared to gold buried in the earth, honey guarded by bees, and a gem hidden in rags. The vaidūrya became the signature metaphor of tathāgatagarbha literature because it captures both the concealment and the indestructibility of the innate nature — unlike a lamp that can be extinguished, a jewel cannot lose its lustre.

Vinītadeva (विनीतदेव, Tibetan: དུལ་བའི་ལྷ, dul ba'i lha, "God of the Tamed") — An 8th-century Indian Buddhist scholar who wrote extensive commentaries on Dignāga's and Dharmakīrti's foundational logical texts. His works in the Degé Tengyur include commentaries on Dignāga's Sambandhaparīkṣā (Examination of Relations, D4236), Dharmakīrti's Santānāntarasiddhi (Establishing Other Mind-streams, D4238), and Dignāga's Ālambanaparīkṣā (Examination of the Object, D4241). His characteristic method is patient word-by-word exegesis, making compressed philosophical arguments accessible. He explicitly attributes others' contributions (e.g., noting Dharmapāla's syllogisms as "not my own explanation"), demonstrating scholarly honesty. His closing verses reveal pedagogical compassion: "For the delight of those who are beginners, Vinītadeva composed this extensive commentary." The colophon of D4241 lavishly calls him "the Lion of Speech who crushes the brains of the non-Buddhist elephants" — a standard polemical epithet but one that captures the combative intellectual culture of Indian Buddhist monasteries. Three of his texts are in the Good Work Library as first English translations.

Dharmakīrti (धर्मकीर्ति, Tibetan: ཆོས་ཀྱི་གརགས, chos kyi grags pa, "Renowned in Dharma") — The most influential Buddhist philosopher after Nāgārjuna (c. 600—660 CE). Dharmakīrti systematised and defended Dignāga's epistemological revolution, producing seven treatises that became the foundation of Buddhist philosophical education across India and Tibet. His Pramāǥavārttika ("Commentary on Valid Cognition," D4210) is the master text; his Nyāyabinduprakaraǥa ("A Drop of Logic," D4212) is the concise textbook that taught generations of Tibetan monks the complete system of valid cognition in three chapters. Where Dignāga established the two means of knowledge (direct perception and inference), Dharmakīrti refined the definitions, introduced the criterion of causal efficacy (arthakrīyā) as the test of reality, expanded the classification of non-apprehension (anupalabdhi) to eleven types, and developed the theory of the three types of valid logical marks (non-apprehension, nature, and effect). His Sambandhaparīkǣā (D4214) with its auto-commentary Sambandhaparīkǣāvǥtti (D4215) demolishes the concept of relation as ultimately real. Four texts by Dharmakīrti are in the Good Work Library: D4212 (A Drop of Logic), D4214 (Examination of Relations), D4215 (Commentary on the Examination of Relations), and the enormous D4210 and D4211 await future translators.

Dīpaṃkara (दीपंकर, Tibetan: མར་མེ་མཛད, mar me mdzad, "Lamp-Maker") — An ancient Buddha who, in Buddhist tradition, was the first to prophesy that the ascetic Sumedha would one day become the Buddha Śākyamuni. In the Jātaka accounts, Sumedha prostrated himself before Dīpaṃkara and vowed to achieve perfect awakening for the benefit of all beings — the first generation of bodhicitta. The prophecy is referenced in Tibetan devotional literature as the origin-point of Śākyamuni's path: "Having attained supreme glory from Dīpaṃkara and the Buddhas before" (Śrīvanaratna, Buddhastava-daśa, Tengyur D1154). Dīpaṃkara is the 24th of the 28 Buddhas who preceded Śākyamuni, and his name also appears in the epithet of Atiśa Dīpaṃkaraśrījñāna, the great Indian master whose arrival in Tibet initiated the Later Diffusion of Buddhism.

Dignāga (दिग्नाग, Tibetan: ཕྱོགས་ཀྱི་གླང་པོ, phyogs kyi glang po, "Elephant of the Directions") — One of the most important philosophers in the history of Buddhism (c. 480–540 CE). Dignāga founded the school of Buddhist epistemology and logic (Pramāṇa), and his Pramāṇasamuccaya ("Compendium of Valid Cognition") established the framework for Buddhist logic that dominated Indian philosophical discourse for the next thousand years. Born in South India, he studied under Vasubandhu before developing his own system of valid cognition, which recognises only two means of knowledge: direct perception (pratyakṣa) and inference (anumāna). His Ālambanaparīkṣā ("Examination of the Object of Cognition," D4205) with its auto-commentary (Ālambanaparīkṣāvṛtti, D4206) is among the most important short texts in the history of Buddhist philosophy — in eight verses it dismantles both atoms and aggregates as candidates for the object of perception, concluding that the true object is an internal representation within consciousness. His Guṇāparyantastotravātukārikā (D1157) reveals the logician's mind applied to devotional literature — a structural analysis of Mātṛceṭa's praise hymn, mapping the architecture of devotion with the precision of a philosophical treatise. His Nyāyamukha (“Gateway to Reasoning,” D4208) is the complete introductory treatise on proof and refutation — defining thesis, reason, and example, cataloguing every pseudo-form, and establishing the two means of valid cognition. The Sanskrit is lost; it survives in Chinese (Xuanzang) and Tibetan (revised at Sakya monastery). His Hetucakranirṇaya (“Establishing the Wheel of Reasons,” D4209) is the foundational text of Indian formal logic: a 3×3 matrix classifying nine possible combinations of a logical reason’s presence in the similar and dissimilar classes, demonstrating that only two yield valid inference. Together, D4208 and D4209 form the pair of introductory texts to his logical system. His Yogāvatāra ("Entering into Yoga," D4074) reveals a different dimension entirely: the logician writing a meditation manual, guiding the practitioner from study through the dissolution of duality to the arising of superknowledges — the first text from the Mind-Only (Yogācāra) section of the Tengyur to enter the archive. His intellectual heir Dharmakīrti would systematise his innovations into the dominant school of Buddhist thought in India and Tibet.

Nyāyabindu (न्यायबिन्दु, Tibetan: རིགས་པའི་ཐིགས་པ, rigs pa'i thigs pa, "A Drop of Logic") — Dharmakīrti's most concise systematic treatise on Buddhist epistemology. The full title Nyāyabinduprakaraǥa ("A Treatise Called 'A Drop of Logic'") is preserved in the Degē Tengyur as D4212 (Volume 174, Epistemology section). In three compressed chapters, it presents the complete architecture of valid cognition: Chapter 1 defines direct perception (pratyākǣa) as free from conceptualisation and non-erroneous, identifies its four types (sensory, mental, self-awareness, yogic), and establishes the particular characteristic (svalakǣaǥa) as the object of perception and the universal characteristic (sāmānyalakǣaǥa) as the object of inference. Chapter 2 defines inference for one's own sake through the three modes (trairūpya) and classifies the three types of valid logical marks: non-apprehension (anupalabdhi, eleven sub-types), nature (svabhāva), and effect (kārya). Chapter 3 defines inference for another's sake as a formal proof structure, then catalogues every way reasoning can fail: three types of pseudo-reasons, pseudo-examples, objections, and pseudo-objections. This text became the standard textbook for Buddhist logic in Tibetan monastic curricula. The Sanskrit survives; the Tibetan was translated by Lotsāwa Loden Sherab. First English translation from the Tibetan by the Good Works Project (2026).

Nyāyamukha (न्यायमुख, Tibetan: རིགས་པ་ལ་འཇུག་པ, rigs pa la 'jug pa; Chinese: 因明正理門論, Yīnmíng Zhènglǐ Ménlùn) — "Gateway to Reasoning" or "Introduction to Logic." Dignāga's foundational treatise on the complete architecture of Buddhist formal proof. The text defines the three components of a valid argument — thesis (pakṣa), reason (hetu), and example (dṛṣṭānta) — then systematically catalogues every way each can fail: nine types of pseudo-thesis, fourteen pseudo-reasons (four unestablished, six inconclusive, four contradictory), and ten pseudo-examples (five concordant, five discordant). It also defines the two means of valid cognition — direct perception (pratyakṣa) and inference (anumāna) — and genuine and pseudo refutation. The Sanskrit original is lost. It survives in a Chinese translation by Xuanzang (唐三藏) and a Tibetan translation from the Chinese, revised by Chos-kyi-rin-chen (Dharmaratna) at Sakya monastery. Preserved in the Degé Tengyur as D4208 (Volume 174, Epistemology section). Together with the Hetucakranirṇaya (D4209), it forms the pair of introductory texts to Dignāga's logical system: the Hetucakra classifies the nine possible reasons; the Nyāyamukha teaches how to construct and evaluate complete proofs.

Nairañjanā (ནེ་ལེ་ཤར, Skt. Nairañjanā) — A river near Bodh Gayā in present-day Bihar, India. Siddhārtha Gautama bathed in the Nairañjanā before sitting beneath the Bodhi tree and attaining awakening. The river appears in Vasubandhu’s Śīlaparikathā alongside the Gaṅgā and Sarasvatī as a sacred bathing site whose merit is rendered meaningless without moral discipline.

Nirvedhabhagiya (निर्वेधभागीय, Tibetan: ངེས་པར་འབྱེད་པའི་ཆ་དང་མཐུན་པ, nges par 'byed pa'i cha dang mthun pa) — "Aspects Concordant with Penetration." The four preparatory stages of insight that immediately precede the path of seeing (darśanamārga) in the Abhidharma path structure. The four stages are: heat (ūṣman, warmth of approaching realization), peak (mūrdhan, the summit of worldly insight), patience (kṣānti, acceptance of the truth of suffering), and supreme worldly dharma (laukikāgradharma, the highest mundane attainment before entering the noble path). A practitioner who has attained these aspects is no longer an ordinary being in the full sense—they are destined for the path of seeing and cannot fall back to the lower realms. In Vasubandhu's Śāstragāthārthasaṁgraha (D4103, verse 15), this class of practitioner is identified as the third of four persons who benefit from the verse on generosity, restraint, virtue, and the exhaustion of afflictions—their specific benefit is "relinquishment" (gtong ba), the letting go of wrongdoing through penetrative insight. The term is crucial for understanding the Abhidharma's graduated path: between the ordinary person and the noble one, there is a threshold, and the nirvedhabhagiya practitioner stands on it.

Niścaya (निश्चय, Tibetan: ངེས་པ, nges pa) — "Ascertainment." In Dharmottara's epistemology, the cognitive act that constitutes the functional result of valid cognition. Where adhyavasāya (determination) specifies the object, niścaya is the ascertainment that enables a person to engage with the world practically. Dharmottara argues in the Pramāṇaparīkṣā (D4248) that the function of valid cognition is not grasping (grāhya) but ascertainment: cognition does not enable attainment by producing the means of accomplishing a purpose, but by ascertaining the object of engagement — showing it nearby, making it determinate — so that the person can act. Without ascertainment, there is no engagement; without engagement, there is no attainment. Therefore valid cognition is said to have ascertainment as its result. Even direct perception, which grasps momentary particulars, is valid cognition only insofar as the ascertainment born from it takes a continuous object as unified and excludes what does not bear the relevant results. The term is closely related to adhyavasāya (ལྷག་པར་ཞེན་པ, "determination") and functions as the bridge between bare perception and practical action.

Pratibimba (प्रतिबिम्ब, Tibetan: གཟུགས་བརྙན, gzugs brnyan) — "Reflection." In Buddhist epistemology, the image or likeness of an object that appears within cognition. Śaṅkarananda uses the reflection analogy in the Āpoha-siddhi (D4256) to explain how cognition relates to its object: cognition is "connected with a reflection of whatever aspect the object has," and this appearance is said to be the object. The crucial distinction is the source of the reflection — if produced by the object's own activity, it constitutes genuine understanding; if generated internally without the object's productive activity, it produces mere appearance, like the cognition of two moons through cataracts. The term is closely related to sādṛśya (འདྲ་ཉིད, "likeness"), which Śaṅkarananda uses to characterize what conceptual thought actually grasps: not the object itself, but the likeness of the object that cognition generates.

Pratyakṣa (प्रत्यक्ष, Tibetan: མངོན་སུམ, mngon sum) — "Direct perception." One of the two means of valid cognition (pramāṇa) in Dignāga's system. Defined as cognition that is free from conceptual construction (kalpanāpoḍha) and unerring (abhrānta) — it apprehends the specific characteristic (svalakṣaṇa) of its object directly, without the mediation of language or mental categories. When you see fire, the bare sensory awareness before any thought of "fire" arises is pratyakṣa. The moment conceptual thought intervenes — labelling, comparing, naming — the perception becomes pseudo-perception (pratyakṣābhāsa). This definition was revolutionary in Indian philosophy: it excludes yogic perception and mental perception from genuine perception, restricting it to bare sensory contact. Dharmakīrti later modified this definition in the Pramāṇavārttika to include yogic perception and self-awareness.

Anumāna (अनुमान, Tibetan: རྗེས་སུ་དཔག་པ, rjes su dpag pa) — "Inference." The second of the two means of valid cognition in Dignāga's system. Inference is knowing a fact through its sign (liṅga): seeing smoke on a mountain, one infers fire. For an inference to be valid, the reason must possess the three modes (trairūpya): it must be a property of the thesis-subject, present in the similar class, and absent from the dissimilar class. Dignāga's Nyāyamukha (D4208) defines the complete structure of inferential proof and catalogues fourteen ways a reason can fail. The standard example throughout Buddhist logic: "Sound is impermanent, because it is produced — like a pot."

Anupalabdhi (अनुपलब्धि, Tibetan: མི་དམིགས་པ, mi dmigs pa, "non-apprehension") — "Non-apprehension" or "non-perception." The first and most subtle of Dharmakīrti's three types of valid logical marks. Where the nature-mark proves by positive essential connection and the effect-mark proves by causal connection, the non-apprehension mark proves by demonstrating absence: if something that would be perceptible is not perceived, it can be known not to exist there. In the Nyāyabinduprakaraǥa (D4212), Dharmakīrti catalogues eleven types of non-apprehension: (1) non-apprehension of the nature, (2) of the effect, (3) of the pervader, (4) apprehension of the contradictory nature, (5) of the contradictory effect, (6) of the cause of what contradicts, (7) non-apprehension of the cause, (8) apprehension of the effect of what contradicts, (9) apprehension of what is pervaded by a contradictory, (10) of the contradictory of the effect, (11) of the cause of a contradictory of the effect. This eleven-fold classification is the most detailed map of how absence functions as evidence in the Buddhist logical tradition.

Anusaya (अनुशय, Tibetan: བག་ལ་ཉལ, bag la nyal) — "Latent tendencies." In Abhidharma psychology, the dormant traces of afflictions that persist even when not actively manifesting. Unlike active afflictions (kleśa), which disturb the mind overtly, anusaya are seeds lying in the ground of consciousness. The path of seeing (darśana-mārga) exhausts some; the path of meditation (bhāvanā-mārga) uproots the rest. Vasubandhu identifies the elimination of anusaya as what makes nirvāṇa "made an end" (kṛtakṛtya) — when the root is destroyed, afflictions can never arise again.

Trairūpya (त्रैरूप्य, Tibetan: ཚུལ་གསུམ, tshul gsum) — "The three modes" or "triple character of a valid reason." The defining characteristic of a valid logical reason (hetu) in Buddhist epistemology. A reason is valid if and only if: (1) it is a property of the thesis-subject (pakṣadharmatva — e.g., "produced" is a property of sound); (2) it is present in the similar class (sapakṣe sattvam — everything known to be impermanent is also produced); (3) it is absent from the dissimilar class (vipakṣe asattvam — nothing permanent is produced). These three modes are the logical spine of the Buddhist pramāṇa tradition. A reason that fails any mode is a pseudo-reason (hetvābhāsa). Dignāga established this framework in the Nyāyamukha (D4208); his Hetucakranirṇaya (D4209) mapped all nine possible combinations of the second and third modes into the famous 3×3 wheel.

Hetucakra (हेतुचक्र, Tibetan: གཏན་ཚིགས་ཀྱི་འཁོར་ལོ, gtan tshigs kyi 'khor lo) — “The Wheel of Reasons.” Dignāga’s foundational contribution to formal logic: a 3×3 matrix classifying all possible relationships between a logical reason (hetu) and its target classes. The two axes are the similar class (sapakṣa, the class of things possessing the property to be proved) and the dissimilar class (vipakṣa, things lacking it). In each class, the reason may be present in all instances, absent from all, or present in some — yielding nine combinations. Of the nine, only two produce valid inference; two are contradictory (viruddha); four are commonly indeterminate (sādhāraṇa-anaikāntika); and one is uncommonly indeterminate (asādhāraṇa). The text uses three paradigmatic objects — space (permanent), a pot (impermanent, produced), and lightning (impermanent, momentary) — to illustrate all nine positions. Preserved in the Degē Tengyur as D4209 (Volume 174, Epistemology section). The Sanskrit original is lost. Translated into Tibetan by Bodhisattva of Zahor and the monk Dharmāloka.

Hetubindu (हेतुबिन्दु, Tibetan: གཏན་ཚིགས་ཀྱི་ཐིགས་པ, gtan tshigs kyi thigs pa, "A Drop of Reason") — Dharmakīrti's systematic treatise on the valid logical reason (hetu). The full title Hetubindunāmaprakaraṇa ("A Treatise Called 'A Drop of Reason'") is preserved in the Degē Tengyur as D4213 (Volume 174, Epistemology section). The companion text to his Nyāyabinduprakaraṇa (D4212, "A Drop of Logic") — where that work covers the entire system of valid cognition, this one focuses exclusively on the logical reason itself. The treatise opens with a root verse defining the three modes (trairūpya), then unfolds the definition of each: the property of the thesis-subject (pakṣadharmatva), pervasion (vyāpti), and the three types of valid reasons — nature (svabhāva), effect (kārya), and non-apprehension (anupalabdhi). Its most celebrated argument is the proof of momentariness: things must perish by their own nature the instant they arise, because existence itself is sufficient for destruction. The Sanskrit original is lost; the Tibetan was translated by Prajñāvarma and dPal brtsegs Rakṣita. First English translation from the Tibetan by the Good Works Project (2026).

Kṣaṇikatva (क्षणिकत्व, Tibetan: སྐད་ཅིག་མ་, skad cig ma, "momentariness") — The doctrine that all conditioned things exist for only a single instant — the central ontological commitment of Dharmakīrti's epistemology. In the Hetubindunāmaprakaraṇa (D4213), Dharmakīrti provides the most rigorous proof: a thing that exists must perish; it requires no external cause of destruction, because if it depended on something external, it would be permanent until that cause arrived (which contradicts its being a conditioned thing). Therefore existence itself is sufficient for cessation — the thing perishes the instant it arises. The argument is a nature-reason (svabhāvahetu): "whatever exists is momentary — like a pot." This proof became the standard Buddhist argument for momentariness in all subsequent Indian and Tibetan philosophy.

Kṣaṇabhaṅga (क्षणभङ्ग, Tibetan: སྐད་ཅིག་འཇིག་པ, skad cig 'jig pa, "momentary perishing") — The specific doctrine that all conditioned phenomena perish (bhaṅga) in the very instant (kṣaṇa) they arise. Distinguished from kṣaṇikatva ("momentariness" as a general characterization): kṣaṇabhaṅga emphasizes the destruction aspect and its philosophical proof. Dharmottara's Kṣaṇabhaṅga-siddhi ("Establishing Momentariness," D4253) is the most systematic surviving defense. The text begins by presenting the opponents' strongest objections — that "perishing immediately upon arising" has no admissible example, that direct perception of enduring recognition (pratyabhijñā) contradicts momentariness, and that the reason "having the nature of performing a function" applies even to non-momentary things. Dharmottara refutes each: recognition across time does not require identity of object (Devadatta and Yajñadatta are different people, and moments are equally different); direct perception confirms only exclusion-based properties, not endurance; and the decisive nature-reason (svabhāvahetu) proves that whatever exists must act sequentially or simultaneously — neither mode is coherent for non-momentary entities. The proof concludes: "from the dissimilar class of non-momentariness, the absence of the pervader — therefore, by reversal, it is pervaded by momentariness. This is a nature-reason."

Pakṣadharmatā (पक्षधर्मता, Tibetan: ཕྱོགས་ཆོས, phyogs chos, "property of the thesis-subject") — The first of the three modes (trairūpya) of a valid logical reason. A reason must actually be a property of the subject under consideration — e.g., if arguing "sound is impermanent because it is produced," the property "produced" must genuinely belong to sound. In the Hetubindunāmaprakaraṇa (D4213), Dharmakīrti specifies that this is established by a direct perception or inference that apprehends the reason as belonging to the thesis-subject. Without this grounding, the inference floats free of its subject and proves nothing. Distinct from the second mode (pervasion) and third mode (exclusion from the dissimilar class), which concern the reason's relationship to the property to be proved.

Sahākārin (सहकारिन्, Tibetan: ལྷན་ཅིགས་མཚུནས་པ, lhan cig mtsungs pa, "co-operating condition") — A supporting cause that works alongside a primary cause to produce an effect. In Dharmakīrti's Hetubindunāmaprakaraṇa (D4213), the concept is critical to the momentariness argument: the opponent objects that things do not perish on their own but require a co-operating condition (like a hammer breaking a pot). Dharmakīrti replies that the co-operating condition does not cause destruction — destruction is already the thing's nature from the moment of arising. The co-operating condition merely determines the particular manner of destruction (e.g., whether a pot shatters into large or small pieces), not the fact of destruction itself. This distinction between the fact and the manner of cessation is one of the subtlest arguments in Buddhist epistemology.

Vyāpti (व्याप्ति, Tibetan: ཁྱབ་པ, khyab pa, "pervasion") — The logical relation of invariable concomitance between a reason and the property to be proved — the backbone of Buddhist inference. If smoke always accompanies fire, then smoke "pervades" the fire-bearing class. In the Hetubindunāmaprakaraṇa (D4213), Dharmakīrti defines pervasion through two components: (1) the reason is present in whatever possesses the property to be proved (anvaya, positive concomitance), and (2) the reason is absent wherever the property to be proved is absent (vyatireka, negative concomitance). He argues that for nature-reasons, pervasion is known through essential identity: to exist is to be momentary, so the pervasion is established by the nature of the thing itself, not by enumeration of instances. This is the key innovation that allows Dharmakīrti to prove universal properties (like momentariness) through a single inference.

Duḥkha-pariksha (दुःखपरीक्षा, Tibetan: སྡུག་བསྔལ་བརྟག་པ, sdug bsngal brtag pa) — "Examination of Suffering." Chapter 12 of the Mūlamadhyamakakārikā and the Akutobhayā. The chapter applies the fourfold refutation (catuṣkoṭi) to suffering: is suffering self-caused, other-caused, caused by both, or causeless? The first option fails because suffering arises dependently — present aggregates give rise to future aggregates, so no self-causation can be found. The second fails because if present and future aggregates were truly "other," the causal link between them would be arbitrary. The third fails because each component individually fails. The fourth fails because causelessness leads to absurd consequences. The Akutobhayā introduces a critical secondary argument: the opponent reframes self-causation as "a person caused his own suffering" and other-causation as "another person caused it." Nāgārjuna demands that the opponent identify a person who exists prior to suffering — but no such person can be shown. The chapter concludes by extending the fourfold refutation to all external entities: the four alternatives do not exist with regard to the aggregates alone, nor with regard to form and all other phenomena.

Dvādaśakāra (द्वादशकार, Tibetan: མཛད་པ་བཅུ་གཉིས, mdzad pa bcu gnyis) — "The Twelve Deeds." A standard Mahāyāna enumeration of the great life-events of the Buddha Śākyamuni, from his descent from Tuṣita heaven to his passing into parinirvāṇa. The most common list: (1) descent from Tuṣita, (2) entering the womb, (3) birth, (4) mastering the arts, (5) enjoying the palace, (6) renunciation, (7) practicing austerities, (8) going to the seat of awakening, (9) defeating Māra, (10) attaining enlightenment, (11) turning the wheel of dharma, (12) parinirvāṇa. Different enumerations exist — some traditions count eight, some twelve, some more. Nāgārjuna's Dvādaśakāranāmanayastotra (D1135) adds the great miracle at Śrāvastī and the distribution of relics, yielding thirteen narrative stanzas despite the title's "twelve."

Elāpattra (एलापत्र, Tibetan: ཨེ་ལ་པ་ཏྲ, e la pa tra) — "Leaf-ear" or "She-leaf." A nāga king (serpent deity) prominent in Buddhist prophecy literature and avadāna collections. In the Prophecy of Arhat Sanghadeva (D4201), Elāpattra plays a central role in the apocalyptic narrative of the decline of Buddhism: as the last Buddhist refugees flee from Gandhāra toward Vārāṇasī with the forces of King Durdharsha in pursuit, Elāpattra lays his own body across a great river as a living bridge, allowing the faithful to cross. Once they have passed, he withdraws his body and the pursuing army drowns. The act is framed as the fruition of a vow (praṇidhāna) made in a previous life. In the broader Buddhist tradition, Elāpattra appears in the Divyāvadāna as a nāga cursed for damaging an elā tree (cardamom), sentenced to bear a great tree growing from his head — a story explaining his name. His appearance in D4201 casts him as a bodhisattva in nāga form, using his supernatural body for the ultimate act of Buddhist generosity: becoming the ground on which others walk to safety.

Gaṇapati (गणपति, Tibetan: ཚོགས་ཀྱི་བདག་པོ, tshogs kyi bdag po) — "Lord of Hosts" or "Lord of the Assembly." The Buddhist form of Gaṇeśa, the elephant-headed deity. In Hindu tradition, Gaṇeśa is the son of Śiva and Pārvatī, the remover of obstacles, and the lord of beginnings. In Buddhist tantra, Gaṇapati appears as an emanation of Avalokiteśvara, reframed as a wealth deity and remover of obstacles within a Mahāyāna soteriological context — his ultimate function is not worldly prosperity but the attainment of awakening. The most vivid iconographic description in the Tengyur is Atiśa's Praise of the Vajra-Desire Commitment of Noble Gaṇapati (D3739): three faces (elephant, cat, and monkey), six arms holding a turnip, sword, jewel, liquor-vessel, sweet dumpling (lāḍu), and axe, great-bellied, adorned with every ornament, seated in half-lotus upon a consort, raining jewels from his mouth. The three faces correspond to three modes of tantric activity: joyful (enriching), peaceful (pacifying), and wrathful (subjugating). The offerings specified — liquor, sweet dumplings, turnips, and rice — parallel Hindu Gaṇeśa worship, where modaka (sweet balls) are the deity's favorite offering.

Hastavāla (हस्तवाल, Tibetan: ལག་པའི་ཚད, lag pa'i tshad) — "The Measure of the Hand." The title of a family of Madhyamaka treatises by Āryadeva preserved in the Degé Tengyur: two verse texts — the Hastavālaprakaraṇa (Toh 3844, "Treatise on Parts") and the Hastavālaprakaraṇakārikā (Toh 3848) — and two prose autocommentaries — the Hastavālaprakaraṇavṛtti (Toh 3845, "Commentary on the Treatise on Parts") commenting on D3844, and the Hastavālavṛtti (Toh 3849, "Commentary on the Measure of the Hand") commenting on D3848. The name derives from the rope-in-the-hand analogy that opens the argument: a rope grasped in dim light is mistaken for a snake. The verse texts state the argument in seven stanzas; the commentaries expand it into complete philosophical treatises, adding the directional argument against atoms (anything with east and west sides has parts, and what has parts cannot be a single atom) and the refutation of the illusion analogy (even illusion requires a cause; no cause, no model). The argument proceeds by mereological analysis — rope → strands → fibers → atoms → directional parts → nothing — until even the partless atom dissolves into garlands of sky-flowers and horns of rabbits. Both commentaries share the key imperative ཐོང་ཤིག (thong shig) — "abandon this" — a single Tibetan word where the entire dialectical apparatus converges into an instruction. Three texts are in the Good Work Library: the verse text (D3844) and its commentary (D3845) translated by Śraddhākaravarman and Rinchen Zangpo; D3849 by Dānaśīla and Paljor Nyingpo with revision by Paltsek Rakshita.

Indhana (इन्धन, Tibetan: བུད་ཤིང, bud shing) — "Fuel" or "kindling." In Madhyamaka philosophy, the technical term for the object-side of the fire-and-fuel analogy (agni-indhana-dṛṣṭānta), one of the most celebrated arguments in the Mūlamadhyamakakārikā (Chapter 10). The opponent proposes fire and fuel as a model for the self (ātman) and the five aggregates (skandha): just as fire is the appropriator-agent that consumes, fuel is the appropriated-action that is consumed; just so, the self is the appropriator that experiences, and the aggregates are what is appropriated. Nāgārjuna systematically demolishes every possible relation between fire and fuel — identity (if fuel were fire, agent and action would be one), difference (if fire were separate from fuel, it would arise without fuel and burn forever), mutual dependence (which is established first?), and the fivefold analysis (fuel is not fire, fire is not in what is other than fuel, fire does not possess fuel, fuel is not in fire, fire is not in fuel) — then extends the analysis universally: "By fire and fuel, the self and the appropriated — all their aspects, together with pot, cloth, and so forth — are fully explained without exception." The analogy is introduced by the opponent but destroyed by the analyst; the destruction proves that the self-aggregate relation it was meant to illustrate is equally groundless. The fire-and-fuel chapter is structurally the bridge between the analysis of specific categories (chapters 1–9) and the analysis of universal concepts (chapters 11–27) in the Root Verses.

Agni-indhana-pariksha (अग्नीन्धनपरीक्षा, Tibetan: མེ་དང་བུད་ཤིང་བརྟག་པ, me dang bud shing brtag pa) — "Examination of Fire and Fuel." Chapter 10 of the Mūlamadhyamakakārikā and the Akutobhayā. The chapter's argument proceeds in three stages: first, the refutation of identity and difference between fire and fuel (with the man-and-woman counter-analogy raised and dismissed); second, the refutation of mutual dependence (parasparāpekṣā) — the chicken-and-egg problem of which is established first; and third, the universal application, where the fire-fuel template is extended to all pairs: self and aggregates, pot and clay, cloth and thread. The concluding verse ("Those who teach the self and entities as identical with those or as different — I do not consider them skilled in the meaning of the teachings") is a direct rebuke of both the Sāṃkhya claim that the self is different from its attributes and the Buddhist reductionist claim that the self is identical with its aggregates. The fire-and-fuel analogy is referenced in Chapter 3 (Examination of the Sense Fields), where the opponent proposes it to support seeing, and it is there dismissed with a cross-reference to Chapter 2's analysis of motion — making this chapter the resolution of a thread planted seven chapters earlier.

Arthakrīyā (अर्थक्रिया, Tibetan: དོན་བྱེད་བྱ་བའི་ཐབས, don byed bya ba'i thabs, "the means of accomplishing a purpose") — "Causal efficacy" or "purposive action." Dharmakīrti's criterion for distinguishing what is ultimately real from what is merely conceptual. In the Nyāyabinduprakaraǥa (D4212), the definition is compressed to a single sentence: "the defining mark of a real thing is nothing but causal efficacy." Fire burns, water quenches, food nourishes — these are real because they produce effects. The concept "fire-in-general" does not burn anything — it is a universal (sāmānyalakǣaǥa), an object of inference, not perception. This criterion divides the entire world into two: particular things that act (perceived) and universal categories that do not (inferred). It is the ontological foundation of Dharmakīrti's epistemology.

Kaliyuga (Sanskrit: कलियुग, kali-yuga; Tibetan: རྩོད་པའི་དུས, rtsod pa'i dus, "the age of strife") — The last and most degraded of the four world-ages (yuga) in Hindu and Buddhist cosmology. In the Brahmanical system (Mahābhārata, Purāṇas), the four ages — Kṛta, Tretā, Dvāpara, Kali — form a declining cycle in which dharma, lifespan, virtue, and social order progressively deteriorate, with the Kali Yuga representing maximum moral entropy. The Buddhist reception of this framework, particularly in the Tengyur Epistles, maps it onto the prophesied decline of the Buddha's dispensation (śāsana): monks abandon the vinaya, teachers pursue wealth instead of wisdom, kings turn from protection to plunder, and the sangha fragments into contention. Mātṛceṭa's Kaliyukaparikathā (D4170) is the most sustained treatment in the Tibetan canon — 25 verses moving from the fading of the dharma through the corruption of each institution to a closing confrontation with Māra, the personification of spiritual obstruction. The Tibetan translation rtsod pa'i dus ("the age of quarreling/strife") emphasizes the social character of the degradation: not cosmic entropy but human conflict. The concept also appears in Nichiren Buddhism as mappō ("end of the dharma"), and in the Yiguandao tradition as the transition from the Red Sun to the White Sun era.

Kātyāyanāvavāda Sūtra (कात्यायनाववादसूत्र, Tibetan: ཀ་ཏྱཱ་ཡ་ན་ལ་གདམས་པའི་མདོ, ka tyā ya na la gdams pa'i mdo) — "The Sūtra of Instruction to Kātyāyana." A discourse of the Buddha preserved in the Pāli canon as the Kaccānagotta Sutta (SN 12.15) and in Sanskrit fragments, in which the Buddha teaches the monk Kātyāyana (Pāli: Kaccāna) that the Dharma does not rest on the duality of existence and non-existence. The sūtra's key declaration — "This world, Kātyāyana, mostly relies on the duality of 'it exists' and 'it does not exist'; but for one who sees the arising of the world as it really is with right wisdom, there is no 'non-existence' with regard to the world; for one who sees the ceasing of the world as it really is with right wisdom, there is no 'existence' with regard to the world" — is cited by Nāgārjuna in the Akutobhayā's Chapter 15 (Examination of Entity and Non-Entity) as the Buddha's own authority for the Middle Way that avoids both eternalism and nihilism. Candrakīrti's Prasannapadā identifies this sūtra as the single most important scriptural basis for the Madhyamaka school. The instruction to Kātyāyana demonstrates that the Middle Way is not Nāgārjuna's philosophical innovation but the Buddha's own teaching, preserved from the earliest stratum of Buddhist scripture.

Lam rim (Tibetan: ལམ་རིམ, lam rim) — “Stages of the path.” A genre of Tibetan Buddhist literature that presents the entire Buddhist path in a systematic, graduated sequence. The genre was established by Atiśa’s Bodhipathapradīpa (eleventh century) and popularized by Tsongkhapa’s Lam rim chen mo. Śākyaśrībhadra’s Bodhisattvasya Mārgakramasaṃgraha is an early thirteenth-century example that compresses the entire structure into thirty-one verses.

Lekha (लेख, Tibetan: སྤྲིང་ཡིག, spring yig) — "Letter." A genre of Buddhist didactic literature in which a teacher or scholar addresses a student, ruler, or family member in a personal letter infused with Buddhist doctrine. The most celebrated example is Nāgārjuna's Suhṛllekha ("Letter to a Friend"), addressed to the Sātavāhana king. Other major epistles include Candragomin's Śiṣyalekha ("Letter to a Student") and Sajjana's Putralekha ("Letter to a Son," D4187). The Degé Tengyur preserves an entire section of epistles (སྤྲིང་ཡིག, spring yig) containing forty-five texts. The genre is distinctive for combining the warmth of personal address with rigorous doctrinal teaching — the letter form allows the teacher to speak with parental concern rather than institutional authority.

Lotsāwa (ལོ་ཙཱ་བ, lo tsā ba) — "Translator." The Tibetan term for the translators who rendered the vast corpus of Indian Buddhist literature from Sanskrit and other languages into Tibetan. The word is traditionally derived from Sanskrit lokacakṣus ("eyes of the world"), reflecting the Tibetan cultural estimation that translators gave the world the ability to see the dharma. The great lotsāwas of the imperial period — Vairocana, Kawa Paltsek, Chokro Lü Gyaltsen — worked alongside Indian paṇḍitas in a collaborative model that became standard: the paṇḍita explained the text, the lotsāwa rendered it into Tibetan. The most famous lotsāwa is Marpa Chökyi Wangchuk (1012–1097), founder of the Kagyu lineage, who traveled to India three times and translated numerous tantric texts. His hand appears on D4187 (Putralekha), in which the letter's recipient, Mahajana, served as the Indian paṇḍita and Marpa as the Tibetan translator.

Putralekha (पुत्रलेख, Tibetan: བུ་ལ་སྤྲིང་བ, bu la spring ba) — "Letter to a Son." A Buddhist verse epistle composed by the eleventh-century Kashmiri scholar Sajjana, addressed to his son Mahajana, who had left Kashmir to wander in distant borderlands. Preserved in the Degé Tengyur (D4187), the text counsels against the four great attachments — to sense pleasures, to wealth, to women, and to intoxicants — drawing on Jātaka tales (Prince Kunala's blinding, the merchants of Siṃhala), canonical sūtras (the Suratasūtra's thirty-five faults of intoxication, the Dākṣiṇya Sūtra's sixty-five faults), and standard Buddhist categories (the five sense pleasures, the seven noble treasures, the ten non-virtues). Translated into Tibetan by Mahajana himself — making this one of the rare cases where the letter's recipient also served as its translator — together with Marpa Lotsawa. The only other modern-language translation is Siglinde Dietz's 1984 German.

Siṃhanāda (सिंहनाद, Tibetan: སེང་གེའི་སྒྲ, seng ge'i sgra) — "Lion's Roar." A form of Avalokiteśvara (Lokeśvara) embodying the fearless proclamation of the dharma. Just as a lion's roar silences all other animals, the dharma taught by Siṃhanāda silences wrong views and conquers māra. The form is depicted with a crystal rosary, matted locks falling to the heart, and a blazing jewel on the head. In Dvijarakṣa's stotra (D1173), Siṃhanāda is praised with imagery that bridges Buddhist and Brahmanical iconography: he reclines on the cosmic serpent Ananta in the ocean of milk like Viṣṇu, yet his mission is entirely bodhisattvic — establishing all sentient beings in omniscience. The name also carries the sense of the supreme confidence of the Buddha's teaching: the lion fears no other beast, and the enlightened being fears no challenge to the truth.

Stotra (स्तोत्र, Tibetan: བསྟོད་པ, bstod pa) — "Praise hymn." A genre of Buddhist devotional verse in which a poet praises the Buddha, a bodhisattva, a guru, or a philosophical truth through sustained metaphor and formal diction. The Degé Tengyur contains a dedicated Stotra section (བསྟོད་ཚོགས, bstod tshogs) comprising over 200 texts — the largest single collection of Buddhist devotional poetry in any canon. Major stotra authors include Nāgārjuna (the Catuḥstava and numerous shorter praises), Mātṛceṭa (the Śatapañcāśatka and Varṇārhavarṇa), Dignāga (Verses on the Meaning of the Praise of Limitless Qualities), and Lakṣmīkara (the Paramagurudharmarājastotra, praising a guru as Dharma-King). The genre ranges from pure devotion to philosophical argument expressed through the voice of reverence — Nāgārjuna's Catuḥstava being the most celebrated example, where Madhyamaka emptiness is expressed not through dialectic but through awe.

Sparśa (स्पर्श, Tibetan: ཕྲད་པ, phrad pa) — "Contact" or "meeting." In Buddhist abhidharma, the sixth of the twelve links of dependent arising: the convergence of sense-faculty, sense-object, and consciousness that produces feeling (vedanā). In Madhyamaka dialectic, sparśa becomes a test case for self-nature (svabhāva). The opponent in Buddhapālita's MMK Chapter 14 argues: if entities had no self-nature, the Buddha could not have taught contact — form, consciousness, and the eye would have nothing to meet with. Buddhapālita dismantles this by showing that contact requires otherness (anyatva, གཞན་ཉིད) — two things must be genuinely "other" to meet — but otherness itself requires prior self-nature, which is the very thing in dispute. The vase is not "other" when alone; it is not "other" when the cloth arrives. The milk poured into water does not become water, yet you cannot separate them. The chapter concludes with a triple negation: meeting-in-progress does not meet with meeting-in-progress, nor does not-meeting-in-progress meet with not-meeting-in-progress. The term thus functions as a bridge between everyday experience ("things touch") and the deepest Madhyamaka analysis ("touching requires the very self-nature that cannot be found").

Svalakǣaǥa (स्वलक्षण, Tibetan: རང་གི་མཚན་ཉིད, rang gi mtshan nyid, "own-characteristic") — "Particular characteristic." The unique, unrepeatable nature of an individual thing — the redness of this flame, the hardness of this stone, the heat of this moment's fire. In Dharmakīrti's system (Nyāyabinduprakaraǥa, D4212), the particular characteristic is defined as "that which produces a different appearance in cognition depending on proximity and non-proximity" — the closer you are, the more detail you perceive. It is the object of direct perception (pratyākǣa) and the only thing that is ultimately real, because reality is defined by causal efficacy (arthakrīyā): only the particular can burn, cut, or nourish. Its counterpart is the universal characteristic (sāmānyalakǣaǥa), which is the object of inference — not the thing itself but the conceptual category to which it is assigned.

Pañcakāmaguṇa (पञ्चकामगुण, Tibetan: འདོད་པའི་ཡོན་ཏན་ལྔ, 'dod pa'i yon tan lnga) — "The five qualities of desire" or "the five sense pleasures." The five sensory objects that produce attachment: form (rūpa), sound (śabda), smell (gandha), taste (rasa), and touch (sparśa). A central concept in Buddhist ethics and renunciation literature. The most vivid teaching on their dangers uses five animals, each destroyed by a single sense: the deer by sound (the hunter's song), the elephant by touch (the female's lure), the moth by form (the flame's light), the fish by taste (the baited hook), and the bee by smell (the fragrant pot). Vasubandhu's D4180 preserves the sharpest version of this parable: if one sense destroys an animal, what chance has a human beset by all five, day and night?

Prajñākaramati (प्रज्ञाकरमति, Tibetan: ཤེས་རབ་འབྱུང་གནས་བློ, shes rab 'byung gnas blo) — "Wisdom-Source Intelligence." An Indian Buddhist scholar of the late tenth to early eleventh century, best known as the author of the Bodhicaryāvatārapañjikā, the most important surviving commentary on Shantideva's Bodhicaryāvatāra ("Way of the Bodhisattva"). The Pañjikā is a massive line-by-line gloss that preserves Sanskrit fragments of numerous lost Indian Buddhist texts and served as the primary vehicle through which Shantideva's masterwork was studied in the Indian monastic universities. Prajñākaramati also composed the Śiṣyalekhavṛtti ("Commentary on the Letter to a Student," D4192), a running commentary on Candragomin's Śiṣyalekha (D4183), in which the same methodical exegetical approach is applied to Candragomin's verse epistle on impermanence, the hells, and the bodhisattva ideal. The two works together reveal a scholar equally at home with Madhyamaka philosophy and epistolary literature. The Sanskrit original of the Śiṣyalekhavṛtti is lost; it survives only in the Tibetan translation by Sumatikīrti and Darma-grags.

Parabhāva (परभाव, Tibetan: གཞན་དངོས, gzhan dngos) — "Other-nature" or "the self-nature of another." A key term in Madhyamaka dialectic, designating the hypothetical intrinsic nature that belongs to something other than the entity under analysis. The Akutobhayā's Chapter 15 (Examination of Entity and Non-Entity) establishes the logical relationship between svabhāva (self-nature) and parabhāva: other-nature is simply what is called self-nature when viewed from the standpoint of a different entity. Therefore, if self-nature is not established — because nothing arises independently of causes and conditions — then other-nature is equally unestablished. The argument is structurally devastating: the opponent cannot rescue inherent existence by relocating it from a thing to its relations, because the relations themselves depend on the very self-nature that has been refuted. The term appears in MMK XV.3: "If self-nature is not established, whose other-nature would be established?" (rang bzhin yod pa ma grub na / gzhan dngos gang zhig grub par 'gyur). The refutation of parabhāva is the second step in the cascade that moves from self-nature through other-nature to entity and non-entity, culminating in the Middle Way.

Sāmagrī (सामग्री, Tibetan: ཚོགས་པ, tshogs pa) — "Assembly," "aggregation," or "collection." A technical term in Indian philosophy denoting the coming together of causes and conditions from which a result is supposed to arise. The Sāṃkhya school and certain Buddhist Abhidharma positions hold that results arise from the assembly of their conditions — that the gathering of sufficient causes produces the effect. The Akutobhayā's Chapter 20 (Examination of Cause and Result) systematically dismantles this claim through a tetralemma: the result does not exist in the assembly (for then it would already be accomplished and the assembly would be purposeless), does not exist outside the assembly (for then anything could arise from anything), and the intermediate positions fare no better. The chapter further demonstrates that no mechanism — transmission, temporal contact, or shared nature — can bridge the gap between cause and result. The term is the bridge between the analysis of time (Chapter 19) and the analysis of arising and destruction (Chapter 21): once assembly is refuted, no mechanism remains by which causes could produce results.

Saṃkrānti (संक्रान्ति, Tibetan: འཕོ་བ, 'pho ba) — "Transmigration," "transference," or "passage." In Madhyamaka dialectic, the hypothetical mechanism by which something passes from one state or entity to another. The Akutobhayā's Chapter 20 (Examination of Cause and Result) examines whether a cause transmigrates into the result — testing whether what transfers is identical to the cause, different from it, or bears some other relation. The analysis shows that transmigration cannot be established: if the cause itself passes into the result, then the cause persists and no new result arises; if something different from the cause transmigrates, it is causeless. The term also appears in the title of Nāgārjuna's Bhāvasaṃkrānti (D3840), which applies the same analysis to the passage of beings through saṃsāra — showing that transmigration through the realms of existence, like all conditioned processes, is empty of self-nature.

Saṃsāra-pariksha (संसारपरीक्षा, Tibetan: འཁོར་བ་བརྟག་པ, 'khor ba brtag pa) — "Examination of Samsara." Chapter 11 of the Mūlamadhyamakakārikā and the Akutobhayā. The chapter opens with the Buddha's statement from the Sutra on Beginninglessness: "Monks, samsara has no beginning and no end; the prior and subsequent limits are not apparent." The opponent takes this as proof that samsara exists. Nāgārjuna replies by dismantling every possible temporal ordering of birth and aging-and-death: if birth is first, then birth would lack aging-and-death; if aging-and-death is first, it would arise from no cause; if they are simultaneous, one who is being born would be dying, and both would be causeless. Since the sequence of before, after, and simultaneous is not tenable, why proliferate birth and aging-and-death at all? The final two verses universalize the analysis: what holds for samsara holds for cause and effect, characteristic and characterized, feeling and feeler — all entities are without a prior limit, established like an illusion, a mirage, a city of gandharvas, and a reflection. The chapter is structurally the hinge between the fire-and-fuel analysis (Chapter 10) and the suffering analysis (Chapter 12).

Saṃsarga-parīkṣā (संसर्गपरीक्षा, Tibetan: ཕྲད་པ་བརྟག་པ, phrad pa brtag pa) — "Examination of Contact." Chapter 14 of the Mūlamadhyamakakārikā and the Akutobhayā. A compact and precise chapter (eight root verses) that refutes the possibility of real contact (saṃsarga) between any entities. The argument proceeds by showing that contact requires three elements — the seen, seeing, and the seer — and that these three can be analysed either as identical or as different. If identical, contact is impossible because nothing contacts itself. If different, contact is equally impossible because truly different things lack the mutual relation required for meeting. The chapter then demonstrates that otherness (anyatva) itself depends on something being "other than" something else — and since contact is a prerequisite for establishing that relation, otherness is circular: it cannot be established before contact, yet contact cannot be established before otherness. The Akutobhayā extends the analysis beyond the visual triad to feeling, desire, grasping, and all other phenomena, concluding that "there is no contact of any entities whatsoever." The chapter is structurally the bridge between the refutation of reality and alteration (Chapter 13) and the refutation of self-nature and entity (Chapter 15).

Saṃtāna (संतान, Tibetan: རྒྱུད, rgyud) — "Continuum," "stream," or "succession." A technical term in Buddhist philosophy denoting the continuous series of causally connected moments that constitutes a person, a phenomenon, or a process across time. The concept is deployed by Buddhist substantialists to explain how karmic results arise from actions that have already ceased, how rebirth occurs without a permanent self, and how compounded things persist through change — the continuum provides apparent continuity without requiring a permanent substrate. The Akutobhayā's Chapter 21 (Examination of Arising and Perishing) subjects the continuum to Madhyamaka analysis: if the continuum of the three times (past, present, future) is asserted, it must be shown how a present continuum can connect to a past or future one — but any mechanism of connection faces the same problem as the original question, generating an infinite regress. The continuum is the final refuge of the opponent in Chapter 21: after arising, perishing, identity, difference, and linking (antarābhava) have all been refuted, the opponent argues that the continuum itself provides the coherence that individual moments lack. Nāgārjuna's reply dissolves this last foothold by showing that the continuum, like everything it is supposed to explain, cannot withstand the analysis of the three times.

Śabarapāda (शबरपाद, Tibetan: རི་ཁྲོད་ཞབས, ri khrod zhabs) — "Mountain-Hermitage Feet" or "The One Whose Feet Are in the Wild." One of the eighty-four Mahāsiddhas of the Indian Buddhist tantric tradition. According to hagiographic tradition, Śabarapāda was a hunter (śabara) in the wild hills who was transformed by Buddhist teaching into a great yogin. Some lineage accounts venerate him as a direct disciple of Nāgārjuna. Vanaratna (1384–1468) composed the Śrī Śabarapāda Stotra Ratnam ("Jewel Praise of Śabarapāda," D1176), a twenty-four-verse devotional masterpiece praising him. The first three verses form a name-acrostic on the syllables ŚA-BA-RA, and the remaining twenty-one systematically decode every ornament of the Mahāsiddha's iconographic form as a philosophical truth: the skull garland's red and black halves as the two truths (conventional and ultimate) in non-dual unity, the bone necklace as compassion, the ashes smeared on his body as the immutable mind, the dreadlocks as luminosity's blessing in union, the six skull-garland bracelets as the six pāramitās, and the peacock's tail as innate bliss. D1176 sits between D1175 (Vanaratna's praise of Gaṇeśvara) and D1177 (Nyimapa's praise of Vanaratna) in the Tengyur, forming a triptych of devotion across generations.

Śiṣyalekhavṛtti (शिष्यलेखवृत्ति, Tibetan: སློབ་མ་ལ་སྤྲིངས་པའི་འགྲེལ་པ, slob ma la springs pa'i 'grel pa) — "Commentary on the Letter to a Student." A running commentary (vṛtti) on Candragomin's Śiṣyalekha ("Letter to a Student," D4183), composed by Prajñākaramati and preserved in the Degé Tengyur (D4192). Unlike Vairocanarakṣita's ṭīpaṇa (D4191), which provides word-by-word glosses, the vṛtti expands Candragomin's compressed verse into full prose explanation — unpacking the philosophical arguments, identifying scriptural allusions, and drawing out the ethical implications of each passage. The commentary follows the root text's progression from praise of the Buddha through impermanence and the sufferings of saṃsāra to the bodhisattva ideal. Prajñākaramati's approach here mirrors his method in the Bodhicaryāvatārapañjikā: patient, systematic, and attentive to the precise meaning of each word. The Sanskrit original is lost. Translated into Tibetan by the Indian paṇḍita Sumatikīrti and the Tibetan translator Darma-grags.

Śīlagupta (शीलगुप्त, Tibetan: དགེ་སྲུངས, dge srungs, "Guardian of Virtue") — An Indian Buddhist logician of the Pramāṇa tradition, following in the intellectual lineage of Dignāga and Dharmakīrti. His Sarvajñasiddhikārikā ("Verses on Establishing Omniscience," D4243, Degé Tengyur Epistemology section) is a compact dialectical treatise in twenty-five verses arguing that if scripture (āgama) is accepted as a valid source of knowledge (pramāṇa), it necessarily implies the existence of an omniscient being — the Buddha. The argument engages the Vedic (Brahmanical) Mīmāṃsā position that the Vedas are authorless and self-validating, turning the Vedas' own epistemological tools against them: if testimony requires a speaker, and a speaker requires knowledge, then the validity of any scripture demands an origin point of genuine omniscience. The text culminates in a striking moment of epistemic humility (Verse XV): "Even his intention cannot be fully known by the likes of me" — the logician who has just proven omniscience confesses that the Omniscient One's mind exceeds his capacity to analyze it. His companion text, the Śrutiparīkṣākārikā ("Verses on Examining Testimony," D4245), dismantles the word-meaning relationship from the other side: in nineteen verses it demonstrates that words are conventional, inherently ambiguous, and incapable of illuminating meaning directly — only the testimony of a verified omniscient speaker can ground scriptural authority. Together D4243 and D4245 form a dialectical pair: one proves an omniscient being must exist, the other proves scripture without such a speaker is epistemically bankrupt. Both are first English translations: Good Works Library (2026).

Sangha (संघ) — The community of Buddhist practitioners. One of the Three Jewels. In its narrowest sense, the ordained monastic community; in its broadest, all beings who walk the path. The Sangha preserves and transmits the Dharma across generations.

Saṅghānusmṛti (संघानुस्मृति, Tibetan: དགེ་འདུན་རྗེས་སུ་དྲན་པ, dge 'dun rjes su dran pa) — "Recollection of the Saṅgha." The third of the Three Recollections (Buddhānusmṛti, Dharmānusmṛti, Saṅghānusmṛti), a foundational Buddhist devotional practice in which the practitioner calls to mind the qualities of the noble Saṅgha. The standard formula, found across Pāli and Sanskrit sources, enumerates the Saṅgha's qualities: it has entered well, entered with reason, entered straightly, entered with reverence. Within it are the four pairs and eight individuals — the stream-enterers, once-returners, non-returners, and arhats, each counted as path-enterer and fruit-attainer. The Saṅgha possesses seven perfections: moral discipline, concentration, wisdom, faith, learning, liberation, and the knowledge and vision of liberation. It is worthy of oblation, worthy of great oblation, worthy of joined palms — an unsurpassed field of merit. Asaṅga's commentary on this formula (Tohoku D3984, Degé Tengyur) maps the four paths and four fruits onto the sixteen moments of the path of seeing and the progressive abandonment of affliction, defines each of the seven perfections, and explains why the Saṅgha generates immeasurable merit even from those without faith.

Timira (तिमिर, Tibetan: རབ་རིབ, rab rib) — "Cataracts" or "visual distortion." A classical Buddhist philosophical analogy for the distortion of consciousness by ignorance. Just as an eye afflicted by cataracts (timira) perceives floating hairs, spots, or phantom objects in clear space, consciousness distorted by ignorance perceives inherent existence, temporal sequence, and phenomenal diversity in what is actually non-dual and empty. Dignāga's Traikālyaparīkṣā (D4207) closes with this image as its culminating metaphor: "Just as an eye distorted by cataracts, / Gazing upon pure space, / Perceives it filled with floating hairs — as manifold — / Likewise here, consciousness, / Though unchanging, through ignorance, / Like entering turbid water, / Takes on diverse forms." The analogy operates on two levels: epistemologically, it explains how error arises without requiring a real object of error; metaphysically, it demonstrates that the multiplicity of phenomenal experience needs no real basis — just as floating hairs need no real hairs. The image also appears in the Akutobhayā (D3829) and the Abudhabodhakanāmaprakaraṇa (D3838).

Tisarana (Pāli: ti "three" + saraṇa "refuge") — "The Three Refuges." The foundational formula of Buddhist practice: "I take refuge in the Buddha; I take refuge in the Dhamma; I take refuge in the Sangha." Also called the Three Jewels (Tiratana) or Triple Gem. To "take refuge" in Buddhism is not to flee from threat but to orient oneself toward benefit — the Pāli word for such teaching is kalyana dhamma, beautiful or wholesome teaching. The formula is recited at the beginning of almost all Buddhist ceremonies and functions as the threshold of Buddhist commitment: repeated three times, it formally marks a practitioner as Buddhist. Each refuge has a distinct role: the Buddha provides the model of what is possible; the Dhamma provides the path; the Sangha provides the community that keeps the path alive. The Dhammapada teaches that these three refuges — unlike mountains, trees, or religious buildings — provide the "noble refuge" that genuinely addresses suffering.

Traikālyaparīkṣā (त्रैकाल्यपरीक्षा, Tibetan: དུས་གསུམ་བརྟག་པ, dus gsum brtag pa) — "Examination of the Three Times." A philosophical verse treatise by Dignāga (c. 480–540 CE), preserved in the Degé Tengyur (D4207, Volume 174, Epistemology section). In thirty-two stanzas, Dignāga subjects the concepts of past, present, and future to rigorous logical analysis, demonstrating that temporal distinctions cannot be established as inherently real. The text builds on Dignāga's epistemological framework from the Pramāṇasamuccaya: the appearance of temporal sequence is a conceptual superimposition upon what is actually non-dual and without inherent nature. The closing metaphor — an eye afflicted by cataracts (timira) perceiving floating hairs in clear space — encapsulates the Yogācāra-Sautrāntika synthesis that the phenomenal diversity of temporal experience is a distortion of what is actually unchanging. Some modern catalogues attribute this text to Dharmapāla, but the Tibetan colophon explicitly names Dignāga (ཕྱོགས་ཀྱི་གླང་པོ, Phyogs kyi glang po) as author. Translated into Tibetan by the monk Tshul khrims rgyal mtshan under the guidance of the Indian paṇḍita Śāntākaragupta. The Sanskrit original is lost. First freely available English translation: Good Works Library (2026).

Triduḥkhatā (त्रिदुःखता, Tibetan: སྡུག་བསྔལ་རྣམ་པ་གསུམ, sdug bsngal rnam pa gsum) — "The three sufferings." A foundational Abhidharma analysis dividing suffering into three types: (1) duḥkha-duḥkhatā (སྡུག་བསྔལ་གྱི་སྡུག་བསྔལ, "suffering of suffering") — overt pain and displeasure; (2) vipariṇāma-duḥkhatā (འགྱུར་བའི་སྡུག་བསྔལ, "suffering of change") — the suffering inherent in pleasant experiences that inevitably change; (3) saṃskāra-duḥkhatā (འདུ་བྱེད་ཀྱི་སྡུག་བསྔལ, "suffering of formations") — the pervasive suffering of conditioned existence itself. Vasubandhu maps these to three aspects of impermanence: arising produces suffering of suffering, perishing produces suffering of change, and the continuous flux of arising-and-perishing produces the suffering of formations.

Vikalpa (विकल्प, Tibetan: རྔམ་པར་རྟོག་པ, rnam par rtog pa) — "Conceptual thought," "mental construction," or "discrimination." The cognitive activity that superimposes categories, distinctions, and relations upon the undifferentiated flux of direct perception (pratyakṣa). In Dignāga's and Dharmakīrti's epistemology, vikalpa is the mechanism by which the mind constructs the conventional world: it is vikalpa that perceives "cause" and "effect," "agent" and "action," "relation" and "difference" where direct perception encounters only unique particulars (svalakṣaṇa). The term is not pejorative — vikalpa is necessary for all practical activity and communication — but it must be recognized as a mental overlay, not a feature of ultimate reality. Dharmakīrti's Sambandhaparīkṣā (D4214) concludes that "the domains of cause and effect are displayed by conceptual thought — displayed like the objects of erroneous cognition."

Vimokṣamukha (विमोक्षमुख, Tibetan: རྣམ་ཐར་སྒོ, rnam thar sgo) — "The Three Gates of Liberation." Three aspects of the realization of emptiness, each functioning as a doorway into the direct experience of nirvāṇa: (1) emptiness (śūnyatā, སྟོང་པ་ཉིད) — all phenomena lack inherent existence; (2) signlessness (animitta, མཚན་མ་མེད་པ) — the characteristics by which we identify and differentiate things are themselves empty; (3) freedom from aspiration (apraṇihita, སྨོན་པ་མེད་པ) — when emptiness and signlessness are realized, there is nothing to wish for, no goal to pursue, no state to attain that is not already the case. The three gates correspond to wisdom, meditation, and result respectively. Triratnadāsa's D1152 invokes all three in a single line — "emptiness, signlessness, and freedom from aspiration" — as the qualities of the Buddha who is "profound, hard to see, extremely difficult to realize."

Vyākaraṇa (व्याकरण, Tibetan: ལུང་བསྟན, lung bstan) — "Prophecy," "prediction," or "declaration." A genre of Buddhist literature in which an authoritative figure — typically the Buddha or an arhat — foretells future events, particularly the decline and eventual disappearance of the dharma, or predicts a disciple's future attainment of buddhahood. The Tibetan term lung bstan ("authorized prediction") carries both senses: a prophecy spoken with the authority of realization. The genre is distinct from the sūtra and śāstra categories in the Tengyur: where sūtras record the Buddha's teachings and śāstras analyse them, vyākaraṇas narrate the future — the fate of kingdoms, the corruption of the saṅgha, the last battles, and the final extinction of the Buddhist dispensation. Major examples include the Prophecy of Arhat Sanghadeva (D4201), which predicts the decline of Buddhism from Khotan through Tibet to Gandhāra to the final destruction at Kauśāmbī, and the Kauśāmbīvyākaraṇa preserved in the Divyāvadāna. The genre's purpose is not fatalism but urgency: by narrating the future decline, the prophecy exhorts the present generation to practise while the dharma still exists.

Kalyana dhamma (Pāli: kalyana "beautiful, wholesome, good" + dhamma "teaching, truth") — "Beautiful teaching" or "wholesome truth." A Pāli compound used to describe the nature of Buddhist teaching as something one is drawn toward rather than driven into by fear. The practitioner seeks the Three Refuges (Tisarana) not out of terror of punishment but because the teaching is genuinely beautiful — the Pāli word kalyana carries aesthetic and ethical weight simultaneously. The compound resists the common English rendering of Buddhist practice as a flight from suffering; it names the positive quality — the beauty and goodness — of what practitioners are moving toward. In the Usenet community of soc.religion.eastern in the early 1990s, Bandula Jayatilaka used kalyana dhamma to correct the Western misreading of "refuge" as cowering: "Refuge in Buddhist teaching is going to these three — Buddha, Dhamma, and Sangha — taking them as guidance."

Niṣprapañca (निष्प्रपञ्च, Tibetan: སྤྲོས་མི་མངའ, spros mi mnga') — "Beyond elaboration" or "free from conceptual proliferation." A key Madhyamaka term denoting the state of having transcended all conceptual constructions — the duality of existence and non-existence, the elaborations of philosophical view, the stain of mental fabrication. Prapañca (conceptual proliferation) is the mind's tendency to overlay reality with categories, distinctions, and labels; niṣprapañca is what remains when that overlay ceases. In Śrīvarman's Tattvastava (D1116), suchness is praised as "having transcended the pair of existence and non-existence, freed from the stain of conceptualization, without grasping or rejection, abiding on level ground — to the one beyond elaboration, I bow." The image of "level ground" (sa mnyam) is powerful: when all conceptual peaks and valleys are levelled, what remains is the simple evenness of reality as it is.

Niḥśreyasa (निःश्रेयस, Tibetan: ངེས་པར་ལེགས་པ, nges par legs pa) — "Definite Goodness" or "the Highest Good." One of the two aims of Dharma practice in Buddhist soteriology, paired with abhyudaya (higher rebirth). While abhyudaya refers to the worldly benefits of virtuous conduct — favorable rebirth, prosperity, health — niḥśreyasa refers to the ultimate benefit: liberation from cyclic existence, the attainment of nirvana. In Vasubandhu's Śāstragāthārthasaṃgraha (D4103, verse 5), the phrase "they attain the deathless abode" is explicitly glossed as niḥśreyasa — the cause of definite goodness, through the accumulation that leads ultimately to nirvana. The pair structures the Buddhist path at every level: the ten wholesome paths of action produce both abhyudaya and niḥśreyasa; the perfections (pāramitā) culminate in niḥśreyasa; and even a small offering to the Buddha generates merit leading to both — first the traversal of higher realms (abhyudaya), then the deathless abode (niḥśreyasa). The term appears across all Buddhist schools and is one of the oldest soteriological categories in Indian philosophy.

Nirvāṇa (निर्वाण, Pāli: Nibbāna) — "Extinction" or "blowing out." The cessation of suffering, craving, and the cycle of rebirth. Not annihilation but the extinguishing of the fires of greed, hatred, and delusion. The Mahāyāna tradition holds that nirvāṇa and saṃsāra are ultimately nondual — a crosstruth the Tianmu Teachings echo. Parinirvāṇa is the final nirvāṇa at physical death.

Nirvikalpajñāna (निर्विकल्पज्ञान; Tibetan: རྣམ་པར་མི་རྟོག་པའི་ཡེ་ཤེས, rnam par mi rtog pa'i ye shes) — "Non-conceptual wisdom." The direct, non-discursive awareness that is the abode (gnas) of basis-transformation in Yogācāra soteriology. In the Dharmadharmatāvibhāga (Toh 4022), Maitreya unfolds its understanding through six aspects: focus (Great Vehicle teaching, aspiration, certainty, accumulation), abandonment of signs (coarse, medium, subtle, far-reaching), correct application (focused, non-focused, and their reversals), characteristic, benefit, and thorough knowledge. The key definition: "where neither of the two is focused upon — that is non-conceptual wisdom: without object, without focus, characterized by the non-focus of all signs." The sūtras describe it as "formless, inexpressible, without abode, without appearance, without cognition, and without support." Distinguished from mere absence of thought — it is the positive realization of suchness (dharmatā) through direct perception, attained on the path of seeing and deepened through all ten grounds.

Nirmāṇakāya (निर्माणकाय; Tibetan: སྤྲུལ་སྐུ, sprul sku) — "Emanation Body." The third of the three bodies (trikāya) of the Buddha — the physical form that appears in the world to teach and liberate sentient beings. The historical Śākyamuni Buddha, who was born in Lumbinī, attained enlightenment at Bodh Gayā, turned the wheel of dharma, and passed into parinirvāṇa at Kuśinagara, is the paradigmatic nirmāṇakāya. Unlike the formless dharmakāya or the radiant sambhogakāya, the nirmāṇakāya is visible to ordinary beings and operates through "manifold skilful means and various forms" — Nāgārjuna's Praise of the Three Bodies (D1123) describes it appearing "in some realms like blazing fire" and in others turning the wheel of dharma, "dispelling the terrors of the three realms." The Tibetan word sprul sku (literally "emanation body") also gives rise to the institution of the tulku — a recognized reincarnation of an accomplished master, understood as a deliberate emanation for the benefit of beings.

Nītiśāstra (नीतिशास्त्र, Tibetan: ལུགས་ཀྱི་བསྟན་བཅོས, lugs kyi bstan bcos) — "Treatise on Right Conduct" or "Science of Ethical Policy." A genre of Indian didactic literature concerned with practical wisdom — the art of living well, governing justly, and navigating the world's dangers with moral intelligence. The Sanskrit compounds nīti ("guidance," "conduct," "policy") with śāstra ("teaching," "treatise"). In the Hindu tradition, the genre is associated with Cāṇakya's Arthaśāstra and the animal fables of the Pañcatantra and Hitopadeśa. In the Buddhist tradition, nītiśāstra takes a distinctive turn: the practical wisdom is grounded in the Dharma, and the fables and maxims serve not worldly success but the cultivation of virtue and the recognition of saṃsāra's traps. Nāgārjuna's nītiśāstra works — the Prajñāśataka ("The Hundred Wisdoms," D4328), the Prajñādaṇḍa ("The Staff of Wisdom," D4329), and the Jantupoṣaṇabindu ("A Drop of Nourishment for the People," D4330) — are preserved in the Miscellaneous section of the Degé Tengyur and blend Madhyamaka philosophical insight with the accessible voice of proverbial wisdom: animal fables, warnings against false friends, praise of generosity and learning, and the teaching that all worldly attainments dissolve at death. Non-Buddhist Indian nītiśāstra authors also appear in the Tengyur: Cāṇakya's Rājanītiśāstra (D4334) transmits Kauṭilyan political wisdom, while Masūrakṣa's Nītiśāstra (D4335) offers seven chapters of ethical counsel on topics from kingship and friendship to speech and the nature of the wicked. The genre bridges the philosophical and the pastoral — where the Mūlamadhyamakakārikā argues emptiness for philosophers, the nītiśāstra teaches it to kings, merchants, and householders through stories they can remember.

Samāropa (समारोप, Tibetan: སྒྲོ་འདོགས, sgro 'dogs) — "Superimposition." A technical term in Buddhist epistemology denoting the cognitive act by which the nature of one thing is projected onto another, making distinct things appear non-distinct. The classic example is nacre (mother of pearl) perceived as silver: the cognition of silver does not abandon nacre's own nature but suppresses it, cognizing as though following nacre's aspect. Superimposition is central to the apoha theory — Śaṅkarananda's Āpoha-siddhi argues that all conceptual cognition operates through the reversal of superimposition, not through the grasping of positive universals. Three key properties: (1) superimposition belongs to the understander, not to the entity; (2) superimposition and ascertainment are mutually exclusive — when there is superimposition there is no ascertainment, and vice versa; (3) only conceptual thought can reverse superimposition, because only conceptual thought can hold the error and the correction simultaneously. Related: Vedāntic adhyāropa (similar concept but with different metaphysical commitments).

Saṃsāra (संसार) — The cycle of birth, death, and rebirth driven by karma and ignorance. All sentient beings wander through saṃsāra until they attain liberation. The wheel turns through six realms: gods, demigods, humans, animals, hungry ghosts, and hell beings. The Yiguandao tradition reframes saṃsāra as the Mother's children lost in the Eastern Land, forgetting their origin.

Sambandha (संबन्ध, Tibetan: འབྲེལ་པ, 'brel pa) — "Relation," "connection," or "binding." A technical term in Indian philosophy denoting the real connection between two entities — the metaphysical glue that supposedly binds cause to effect, substance to quality, agent to action. In Buddhist Madhyamaka and epistemological traditions, sambandha is subjected to rigorous analysis and found to be ultimately unestablishable. Dharmakīrti's Sambandhaparīkṣā (D4214) systematically dismantles every proposed definition: relation as dependence on another, as mingling of essences, as conjunction, as aggregation. The conclusion: things arise momentarily, each separately, and what we call "relation" is a conventional designation (prajñaptimātra) imposed by conceptual thought upon the flux of momentary particulars. The analysis extends Dharmakīrti's broader epistemological project of demonstrating that inference operates through conventional signs — "just as from a dewlap one infers an ox" — rather than through real connections between things. The companion auto-commentary (Sambandhaparīkṣāvṛtti, D4215) expands each verse argument into detailed prose, addressing every possible objection and revealing the full dialectical architecture.

Saṃbhāra (संभार, Tibetan: ཚོགས, tshogs) — "Accumulation" or "collection." In Mahāyāna soteriology, the two accumulations (saṃbhāradvaya) that together constitute the complete path to buddhahood: the accumulation of merit (puṇyasaṃbhāra, བསོད་ནམས་ཀྱི་ཚོགས) and the accumulation of wisdom (jñānasaṃbhāra, ཡེ་ཤེས་ཀྱི་ཚོགས). Merit arises from generosity, ethical discipline, patience, and the four means of attraction (catuḥsaṃgrahavastu: giving, kind speech, beneficial conduct, consistency); wisdom arises from meditation on dependent origination and selflessness. Vasubandhu's Saṃbhāraparikathā (D4166) opens with the bodhisattva's daily question — "What merit and wisdom shall I accumulate today?" — framing the two accumulations not as abstract doctrinal categories but as a daily practice of attention. The text teaches that merit without wisdom produces fortunate rebirth but not liberation, while wisdom without merit lacks the compassionate basis to benefit others. Together they are the two wings by which the bodhisattva flies to awakening.

Saṃgrahavastu (संग्रहवस्तु, Tibetan: བསྡུ་བའི་དངོས་པོ, bsdu ba'i dngos po) — "Means of gathering" or "means of attraction." The four methods by which a bodhisattva draws beings together and leads them toward the Dharma: generosity (dāna), kind speech (priyavacana), beneficial conduct (arthacaryā), and consistency or acting in accord with one's teaching (samānārthatā). These four are not rhetorical techniques but ethical practices — the bodhisattva genuinely gives, genuinely speaks with care, genuinely acts for others' benefit, and genuinely lives what they teach. Vasubandhu's Saṃbhāraparikathā (D4166) closes with the four questions a bodhisattva asks daily: "To whom shall I give generously? To whom shall I speak kindly? For whom shall I act beneficially? With whom shall I practice consistently?" The teaching appears across Mahāyāna literature as the social dimension of the bodhisattva path — while the six perfections (pāramitā) govern inner cultivation, the four means of gathering govern how that cultivation enters the world.

Samprajanya (सम्प्रजन्य, Tibetan: ཤེས་བཞིན་, shes bzhin) — "Mindful awareness" or "clear comprehension." The quality of knowing what one is doing while doing it — not merely remembering to be mindful, but the active discernment that examines each action of body, speech, and mind before, during, and after its performance. Distinguished from mindfulness (smṛti / dran pa), which holds the object in attention, samprajanya evaluates whether the action is appropriate, purposeful, and aligned with the path. Ācārya Vīra's Discourse Showing the Good Path (D4175) identifies three aspects: purposeful awareness (not performing even purposeless actions), awareness of one's own domain (knowing one's proper sphere of conduct), and undeluded awareness (accomplishing what should be done at the proper time). The text teaches that the complete purification of body, speech, and mind through samprajanya is what accomplishes the preparation for samādhi — making it the bridge between the ethical and concentrative trainings.

Sambhogakāya (संभोगकाय; Tibetan: ལོངས་སྤྱོད་རྫོགས་སྐུ, longs spyod rdzogs sku) — "Enjoyment Body" or "Body of Complete Fulfillment." The second of the three bodies (trikāya) of the Buddha — the glorified, radiant form visible to advanced bodhisattvas in the pure Buddha-fields. While the dharmakāya is formless truth and the nirmāṇakāya is the physical emanation in the world, the sambhogakāya is the luminous, teaching form that "abides in the kingdom of dharma," adorned with the major and minor marks, ever sending forth the sound of the dharma throughout all worlds. Nāgārjuna's Praise of the Three Bodies (D1123) describes its splendor as "surpassing the world, inconceivable, the fruit of a hundred excellent deeds." In Vajrayāna visualization practice, the yidam deities are understood as sambhogakāya manifestations — radiant, symbolic forms through which practitioners access the formless dharmakāya.

Rūpakāya (रूपकाय, Tibetan: གཟུགས་སྐུ, gzugs sku) — "Form Body." The aspect of buddhahood that is visible — the body that appears in the world. In the trikāya (three-body) doctrine, the rūpakāya encompasses both the sambhogakāya (radiant enjoyment body visible to advanced practitioners) and the nirmāṇakāya (physical emanation visible to ordinary beings). The rūpakāya stands in contrast to the dharmakāya, the formless truth-body. The Nirupamastava's most celebrated verse (XVIII) captures the paradox of the rūpakāya in Madhyamaka understanding: "Your body has no hollow within, / no flesh, no bone, no blood — / yet like the rainbow in the sky, / your body is displayed." The rainbow image is precise: a rainbow requires no substance to be seen, yet it appears luminously — just so, the Buddha's form body arises from emptiness without any material basis, blazing with the thirty-two marks of a great being while possessing no inherent existence.

Pratyaya (प्रत्यय, Tibetan: རྐྱེན, rkyen) — "Condition." In Buddhist Abhidharma and Madhyamaka philosophy, the conditions upon which the arising of a phenomenon depends. Distinguished from hetu (cause, རྒྱུ, the direct producing factor): a pratyaya is the broader circumstantial condition that enables arising. The standard Abhidharma taxonomy lists four conditions: (1) hetu-pratyaya (cause condition, རྒྱུའི་རྐྱེན) — the causal capacity of conditions to produce the result; (2) ālambana-pratyaya (observed object condition, དམིགས་རྐྱེན) — the object upon which consciousness depends for its arising; (3) samanantara-pratyaya (immediately preceding condition, དེ་མ་ཐག་རྐྱེན) — the cessation of the prior moment of consciousness that allows the next to arise; (4) adhipati-pratyaya (dominant condition, བདག་རྐྱེན) — the governing faculty, as when the eye produces eye-consciousness. The Akutobhayā (D3829), Chapter 1, states definitively: "A fifth condition does not exist — because it is not observed." The Madhyamaka analysis proceeds to show that even these four conditions are empty of intrinsic nature: the result does not pre-exist in its conditions (contra Sāṃkhya), nor does it arise from conditions that are themselves empty of self-nature. The analysis of pratyaya is the first chapter of the Mūlamadhyamakakārikā because causation is the gateway to emptiness: if arising from conditions cannot be established, no phenomenon can be established.

Prasaṅga (प्रसङ्ग, Tibetan: ཐལ་འགྱུར, thal 'gyur) — "Consequence" or "reductio ad absurdum." The principal method of Madhyamaka philosophical debate, in which the opponent's own premises are shown to lead to absurd or contradictory conclusions. The Prāsaṅgika school of Madhyamaka — founded by Buddhapālita (c. 470–540 CE) and championed by Candrakīrti (c. 600–650 CE) — holds that the Mādhyamika need not advance any thesis of their own; it is sufficient to demonstrate the internal incoherence of the opponent's position. Nāgārjuna's Akṣaraśataka-nāma-vṛtti (D3835) is a virtuoso exercise in prasaṅga reasoning: across fourteen rounds of debate, every opponent's reason is shown to be either circular (identical with the thesis) or self-undermining (different from the thesis). The method extends to its own operation — the commentary's final section turns the refutation on itself, showing that refutation, what is refuted, and the refuter cannot exist sequentially or simultaneously. In Tibetan scholastic debate (rtsod pa), the prasaṅga is delivered as a formal logical consequence: "It follows that X — because Y."

Mūlamadhyamakakārikā (मूलमध्यमककारिका, Tibetan: དབུ་མ་རྩ་བའི་ཚིག་ལེའུར་བྱས་པ, dbu ma rtsa ba'i tshig le'ur byas pa) — "Root Verses of the Middle Way." The foundational text of Madhyamaka Buddhist philosophy, composed by Nāgārjuna (c. 2nd century CE). In twenty-seven chapters and approximately 450 verses, the text systematically demonstrates that all phenomena are empty of intrinsic nature (svabhāva) by analyzing the fundamental categories of Buddhist and non-Buddhist philosophy: causation, motion, perception, the aggregates, the elements, arising and ceasing, the self, time, and the Buddha. The dedication verse establishes the "Eight Negations" — no cessation, no arising, no annihilation, no permanence, no coming, no going, neither of different meaning nor of single meaning — as the character of dependent origination (pratītyasamutpāda). The text generated an enormous commentarial tradition: eight commentaries are listed in the Tibetan canon, including the Akutobhayā (D3829, attributed to Nāgārjuna), Buddhapālita's commentary (D3842), and Candrakīrti's Prasannapadā (D3860). Often abbreviated as MMK. The Sanskrit survives; the Tibetan translation is by the great Lotsāwa Nyi ma grags pa (Pa tshab).

Mañjuśrī (मञ्जुश्री, Tibetan: འཇམ་དཔལ, 'jam dpal; Chinese: 文殊師利, Wénshū Shīlì) — "Gentle Glory." The bodhisattva of wisdom (prajñā), one of the most important figures in Mahāyāna Buddhism. Mañjuśrī is depicted as a youthful prince (kumāra-bhūta) wielding the sword of wisdom that cuts through ignorance and holding the Prajñāpāramitā Sūtra upon a lotus. His epithet "Youthful Mañjuśrī" (Mañjuśrī-kumāra-bhūta, Tibetan: འཇམ་དཔལ་གཞོན་ནུར་གྱུར་པ) appears as the homage formula at the beginning of many Tengyur texts classified in the Madhyamaka section — a cataloguing convention indicating the text belongs to the sūtra rather than tantra division. Where Avalokiteśvara embodies compassion and Samantabhadra embodies practice, Mañjuśrī embodies the penetrating insight that sees the true nature of all phenomena. Nāgārjuna's Kāruṇāstotra (D1132) addresses Mañjuśrī not as a philosophical concept but as a compassionate savior, creating a theological tension between the bodhisattva's universal compassion and the speaker's unrelieved suffering.

Kāruṇāstotra (कारुण्यस्तोत्र, Tibetan: སྙིང་རྗེ་ལ་བསྟོད་པ, snying rje la bstod pa) — "Praise of Compassion." A devotional hymn of seventeen verses attributed to Nāgārjuna, addressed to the bodhisattva Mañjuśrī, Tohoku 1132 in the Degé Tengyur. Unlike Nāgārjuna's other stotras, which deploy dialectical reasoning in devotional form, the Kāruṇāstotra is a sustained personal appeal — the speaker cries out to Mañjuśrī across fifteen verses of escalating paradox: "You save all beings — why not me? You are the embodiment of compassion — why have you not seen my suffering? You are the Great Physician — if even you abandon me, to whom shall I go for refuge?" The theological structure is that of the Psalms or the Yiguandao Mother's lament: the divine is addressed from below, with absolute faith and absolute bewilderment. The final two verses shift from complaint to dedication, turning the merit of the praise itself into a prayer for all beings. The Sanskrit original is lost; the text was translated into Tibetan by the Kashmiri paṇḍita Tilakakalaśa and Pa tshab lo tsā ba Nyi ma grags pa.

Stūpa (Sanskrit: स्तूप; Tibetan: མཆོད་རྟེན, mchod rten; Pāli: thūpa) — A reliquary monument enshrining the relics or remains of the Buddha, an arhat, or a revered teacher. Originally funerary mounds, stūpas became the primary architectural expression of Buddhist devotion — the faithful circumambulate them clockwise as a practice of merit-making. In Vimalaśrī's Praise of the Holy Guru Puṇyaśrī (D3759), the teacher's body is called mchod rten bskyod pa — "a stūpa set in motion" — meaning the guru carries within his living body the same sanctity that a stūpa holds in stone. The image transforms the static monument into a walking vessel of the dharma. Major stūpas include the Great Stūpa of Dhānyakaṭaka (modern Amarāvatī), Boudhanath in Nepal, and the ruins of Sāñcī.

Aṣṭamahāsthāna (Sanskrit: अष्टमहास्थान, "Eight Great Places"; Tibetan: གནས་ཆེན་པོ་བརྒྱད, gnas chen po brgyad) — The eight great pilgrimage sites of Buddhism, each marked by a stūpa commemorating a supreme event in the life of Śākyamuni Buddha. The sites are: (1) Bodh Gayā, where he attained enlightenment; (2) Lumbinī, where he was born; (3) Sārnāth/Vārāṇasī, where he first turned the wheel of Dharma; (4) Śrāvastī, where he displayed great miracles; (5) Saṅkāśya, where he descended from Trāyastriṃśa heaven; (6) Rājagṛha, where he tamed the mad elephant Nālāgiri; (7) Vaiśālī, where a monkey offered him honey; and (8) Kuśinagara, where he entered parinirvāṇa. Nāgārjuna's Aṣṭamahāsthānacaityastotra ("Praise of the Stūpas of the Eight Great Holy Sites," Tengyur D1134) praises each stūpa in a four-line verse with the refrain "Homage to the Stūpa of..." — an early witness to this pilgrimage tradition before the list was standardized. The enumeration and ordering vary across traditions; Nāgārjuna's sequence places awakening first, birth second, reflecting a theological emphasis on attainment over biography. King Śrī Hariśadeva of Kashmir composed a companion Aṣṭamahāsthānacaityavandanāstava (D1168) "for the sake of his mother" — five verses expanding outward from the eight events to encompass Indian pilgrimage sites, foreign Buddhist lands from Kashmir to China to Sri Lanka, cosmic mountains, divine abodes, and finally all stūpas and Buddha images in every realm of existence.

Śāstragāthāsaṃgraha (Tibetan: བསྟན་བཅོས་ཚིགས་སུ་བཅད་པ་བསདུས་པ, bstan bcos tshigs su bcad pa bsdus pa) — "Collection of Verses from Treatises." A compilation attributed to Vasubandhu assembling the most essential Buddhist verses into a single portable anthology. Preserved in the Abhidharma section of the Degé Tengyur (Toh 4102). Contains twenty-five quatrains drawn from the Buddha’s discourses, including the Pātimokkha verse, the aniccā verse from the Mahāparinibbāna Sutta, the Three Refuge verses, and the Kasībhāradvaja Sutta’s teaching on contentment.

Stutyatītastava (स्तुत्यतीतस्तव, Tibetan: བསྟོད་པ་ལས་འདས་པར་བསྟོད་པ, bstod pa las 'das par bstod pa) — "Praise Transcending Praise." A philosophical hymn of eighteen verses and a dedication attributed to Nāgārjuna, Tohoku 1129 in the Degé Tengyur. The most compressed philosophical hymn in the stotra collection: every major Mādhyamika argument appears in devotional miniature. The title states its own paradox — the Tathāgata transcends praise, yet the poet praises him. Verse IX contains the central Madhyamaka move in two lines: "To abandon all views, O Protector, you taught emptiness / Yet even that is merely imputed." Verse VIII — "They come from nowhere. They go nowhere. You hold that all things are like reflections" — distills the eight negations of the Mūlamadhyamakakārikā dedication into four lines of prayer. The Sanskrit original is lost; the text survives only in Tibetan.

Suprabhāta (सुप्रभात, Tibetan: རབ་ཏུ་སྔ་བར་ནམ་ལངས་པ, rab tu snga bar nam langs pa) — "Auspicious dawn" or "beautiful morning." A genre of devotional hymn in Indian literature in which a deity is awakened at dawn with praises. The genre is well-attested in Hindu temple worship — the most famous example is the Suprabhāta of Tirumala, sung daily before the Veṅkaṭeśvara image. The Buddhist Suprabhāta-prabhāta-stotra (D1167 in the Degé Tengyur) by the Kashmiri king Śrī Hariśadeva subverts the genre: instead of awakening a sleeping god, it praises the Buddha as the only being who is already awake. The poem surveys the entire Hindu cosmos — Brahmā, Śiva, Indra, Viṣṇu, Sūrya, Candra, Agni, Gaṇeśa, Kārttikeya, the world-protectors, and the wandering ascetics — and declares them all asleep, concluding each verse with the refrain "You who possess the ten powers, you are always awake at the auspicious dawn!" The double meaning of "awakening" — literal dawn and spiritual bodhi — is the poem's theological engine: while gods sleep in delusion, the Daśabala (Ten-Powered One) is awake because he has awakened. Translated into Tibetan by the Indian paṇḍita Rāja Śrī Jñānamitra and the lotsāwa Khe'u brgad Yönten Pal.

Niruttarastava (निरुत्तरस्तव, Tibetan: བླ་ན་མེད་པའི་བསྟོད་པ, bla na med pa'i bstod pa) — "Unsurpassed Praise." A short hymn of eight verses attributed to Nāgārjuna, Tohoku 1130 in the Degé Tengyur. Each verse ends with the refrain "I bow to the Unsurpassed" (bla med de la phyag 'tshal lo). The text is notable for Verse IV's image of atomic particles as "like legs on a snake" (sbrul gyi rkang pa) — as real as legs on a legless creature. This is a classic Madhyamaka analogy: the atoms of the material world have the nature of an impossibility. The title "niruttara" (Pali form; Sanskrit anuttara) means "unsurpassed" — the Buddha transcends every category, including the categories of knowing and not-knowing, meditation and non-meditation. The Sanskrit original is lost; the text survives only in Tibetan.

Śāstra-gāthā-saṃgraha (शास्त्रगाथासंग्रह, Tibetan: བསྟན་བཅོས་ཚིགས་སུ་བཅད་པ་བསྡུས་པ, bstan bcos tshigs su bcad pa bsdus pa) — "Collection of Verses from Treatises." A short anthology of twenty-six Buddhist verses compiled by Vasubandhu, preserved in the Degé Tengyur, Abhidharma section, Tohoku 4102. The text gathers essential teachings from across the canonical literature into a single devotional and instructional sequence: praise of the Buddha's incomparability, the Triple Refuge, teachings on merit and virtue, the Prātimokṣa summary ("Commit no evil whatsoever, practice virtue abundantly, completely tame your own mind — this is the teaching of the Buddha"), the verse on the burning world, contemplation of death and impermanence ("Alas! All compounded things are impermanent"), the four ends ("The end of accumulation is exhaustion; the end of the high is falling; the end of meeting is parting; the end of living is death"), and a closing aspiration for the welfare of all beings. Several verses are recognisable as Tibetan renderings of well-known Pali canonical passages (Dhammapada 183, 224, 142; Udāna 2.10; the parinirvāṇa verse). The anthology's placement in the Abhidharma rather than stotra section suggests Vasubandhu understood it as a systematic primer. The Sanskrit original is lost; translated into Tibetan by the Indian paṇḍita Dharmākara and translator-monk Ye shes snying po, revised by dPal brtsegs.

Śīlarakṣita (Sanskrit: शीलरक्षित; Tibetan: སློབ་དཔོན་དགེ་སྲུངས, slob dpon dge srungs, "the teacher who guards virtue") — Indian Buddhist philosopher and logician, otherwise little known in Western scholarship, preserved in the Degé Tengyur through a single text: the Īśvarabhańga-kārikā ("Verses on the Destruction of Isvara," D4247). The work is a systematic refutation of the existence of a creator God (Īśvara), deploying twenty-five verses of rigorous logical argument: a permanent cause cannot produce impermanent effects; a single cause cannot produce diversity; a God dependent on desire is not independent; and interdependent origination renders a creator unnecessary. The text belongs to the tshad ma (epistemology) section of the Tengyur, placing it within the Buddhist pramāṇa philosophical tradition alongside Dignāga and Dharmakīrti. The Sanskrit original is lost.

Īśvara (Sanskrit: ईश्वर, "Lord, Supreme Ruler"; Tibetan: དབང་ཕྱུག, dbang phyug) — The concept of a permanent, omnipotent, singular creator God, as understood and debated in classical Indian philosophy. In Hindu theistic traditions (particularly Nyāya and certain Vedānta schools), Īśvara is the efficient cause of the universe — the cosmic potter who shapes primordial matter. Buddhist philosophers systematically refuted this concept: Śīlarakṣita's Īśvarabhańga-kārikā (D4247) dedicates twenty-five verses to demonstrating that a permanent entity cannot act, a single entity cannot produce diversity, and an omniscient being cannot be ignorant of its own future creations. Āryadeva's Sthāpitahetusādhana (D3847) includes Īśvaravāda among the non-Buddhist positions refuted through prasaṅga. The Buddhist counter-position is always pratītyasamutpāda — interdependent origination renders a first creator both unnecessary and logically impossible.

Jetsun Dragpa Gyaltsen (རྗེ་བཙུན་གྲགས་པ་རྒྱལ་མཚན, Sanskrit: Kīrtidvaja, 1147–1216) — The third of the Five Great Masters (gong ma lnga) of the Sakya tradition of Tibetan Buddhism. Son of Sachen Kunga Nyingpo and younger brother of Sönam Tsemo, he served as throne-holder of Sakya monastery and was renowned for mastery of both sūtra and tantra, prolific authorship of treatises, stainless samādhi, and temple-building at Sakya. His Sanskrit name Kīrtidvaja means "Flag of Renown." The Indian paṇḍita Sugataśrī composed a praise poem in his honor (the Mahāpaṇḍita-Kīrtidvaja-stotram, D1171), celebrating him as the unrivaled scholar-saint of the Land of Snow, whose "good explanations are a cloud of merit bearing continuous rain that increases the crop of virtue." The poem was translated into Tibetan at Sakya monastery by Sugataśrī himself and the Śākya monk Kun-dga' Rgyal-mtshan Dpal-bzang-po.

Jñānasārasamuccaya (ज्ञानसारसमुच्चय, Tibetan: ཡེ་ཤེས་སྙིང་པོ་ཀུན་ལས་བཏུས་པ, ye shes snying po kun las btus pa) — "Compendium of the Essence of Wisdom." A doxographical verse treatise attributed to Āryadeva, preserved in the Degé Tengyur, Madhyamaka section, Tohoku 3851. In approximately thirty-eight verses, the text surveys every major Indian philosophical school — Sāṃkhya, Brahmanical, Jain, Vaiśeṣika, Lokāyata, Śaiva, and several yogic sects — before ascending through the four Buddhist tenet systems (Vaibhāṣika, Sautrāntika, Yogācāra, Madhyamaka) to the freedom from the four extremes. The Madhyamaka refutation employs the ekānekaviyoga ("neither one nor many") argument characteristic of late Indian Madhyamaka: even the Yogācāra's ultimate consciousness is "like a lotus in the sky" — an impossibility, because it can be established as neither one nor many. The text culminates in the Buddha's gold-test instruction: "Like gold that is burned, cut, and polished, monks and the wise should fully examine my words and then accept them — not out of mere respect." Modern scholarship suggests the author may be a later tantric Āryadeva (9th–10th century) rather than Nāgārjuna's disciple. The Sanskrit original is lost; translated into Tibetan by Kṛṣṇa Paṇḍita and translator-monk Chökyi Sherab. Bodhibhadra's prose commentary on the text (Jñānasārasamuccayabhāṣya, D3852) expands each verse into a comprehensive philosophical doxography, and is also preserved in the archive.

Kleśāvaraṇa (क्लेशावरण, Tibetan: ཉོན་མོངས་པའི་སྒྲིབ་པ, nyon mongs pa'i sgrib pa) — "Afflictive obscurations." One of two categories of obstruction that must be overcome on the Buddhist path, the other being knowledge obscurations (jñeyāvaraṇa). The afflictive obscurations are the emotional afflictions — desire, hatred, ignorance, pride, jealousy — that drive the cycle of rebirth and suffering. According to the Madhyamaka, the Śrāvaka path can eliminate the afflictive obscurations through the sixteen aspects of wisdom pertaining to the four truths, but it cannot eliminate their subtle residual imprints (vāsanā). In the Madhyamakaratnapradīpa, Bhāvya argues that the Śrāvaka claim to overcome both obscurations through their path alone is overreach: the knowledge obscurations require the Madhyamaka's ultimate prajñā-wisdom, which is beyond the conceptualization of the Śrāvaka vehicle.

Jñeyāvaraṇa (ज्ञेयावरण, Tibetan: ཤེས་བྱའི་སྒྲིབ་པ, shes bya'i sgrib pa) — "Knowledge obscurations." The subtler of the two obscurations in Mahāyāna Buddhism, consisting of the cognitive habits and conceptual frameworks that prevent omniscient awareness of all phenomena. While afflictive obscurations (kleśāvaraṇa) drive saṃsāra, knowledge obscurations veil the mind's capacity for complete, unobstructed knowing. In the Madhyamakaratnapradīpa, Bhāvya states that these obscurations — including the "great machinery of delusion" comprising the 363 views and the twenty peaks of the composite-self view — are destroyed by "the vajra of ultimate prajñā-wisdom." The Madhyamaka position is that only the Mahāyāna path, which transcends conceptualization entirely, can eliminate knowledge obscurations; the Śrāvaka path, being itself a form of conceptual understanding, cannot.

Neyārtha / Nītārtha (नेयार्थ / नीतार्थ, Tibetan: དྲང་དོན / ངེས་དོན, drang don / nges don) — "Interpretive meaning / definitive meaning." A fundamental hermeneutical distinction in Mahāyāna Buddhism for classifying the Buddha's teachings. Teachings of interpretive meaning (neyārtha, drang don) were spoken for a particular audience and require further interpretation to yield their ultimate intent — they are true provisionally or pedagogically. Teachings of definitive meaning (nītārtha, nges don) express ultimate truth directly. The classification of which teachings are which is itself a source of debate among Buddhist schools. In the Madhyamakaratnapradīpa, Bhāvya classifies the Abhidharma teachings on the aggregates, elements, and sense-bases as interpretive — taught by the Buddha as "rungs of a ladder" to gradually lead beings who are "frightened by the profound approach." He then extends this to the Yogācāra "mind-only" teaching, which he also classifies as interpretive. For the Svātantrika Madhyamaka, only the emptiness of all phenomena — free from all four extremes — constitutes the definitive meaning.

Satyadvaya (सत्यद्वय, Tibetan: བདེན་པ་གཉིས, bden pa gnyis) — "The Two Truths." The foundational epistemological framework of Madhyamaka Buddhism, first articulated systematically in MMK 24.8–10 and its commentaries. The doctrine distinguishes conventional truth (saṃvṛtisatya, Tibetan: ཀུན་རྫོབ་བདེན་པ) from ultimate truth (paramārthasatya, Tibetan: དོན་དམ་བདེན་པ). The Akutobhayā's Chapter 24 defines them precisely: conventional truth is what the world sees through the distortion of non-understanding — all phenomena appearing to arise — which is conventionally true of those very phenomena. Ultimate truth is what the noble ones see through undistorted realization — all phenomena as non-arising — which is ultimately true of those same phenomena. The two truths are not two different realities but two ways of seeing the same reality. The crucial insight: without relying on convention, the ultimate cannot be taught; without relying on the ultimate, nirvāṇa cannot be attained. Both truths are necessary. The doctrine protects against two errors: nihilism (denying conventional reality) and realism (mistaking conventional truth for ultimate truth).

Stotra (स्तोत्र, Tibetan: བསྟོད་པ, bstod pa) — "Praise," "hymn," or "eulogy." The principal genre of devotional poetry in Indian Buddhist literature. A stotra addresses the Buddha (or a bodhisattva, or the dharma itself) in the second person, praising qualities, recounting deeds, and expressing devotion. The Degé Tengyur preserves 71 stotras (Tohoku 1109–1179) in the bstod tshogs ("collected praises") section — hymns by Nāgārjuna, Mātṛceṭa, Dignāga, Aśvaghoṣa, and others. The genre ranges from the philosophical (Nāgārjuna's Catuḥstava, which deploys Madhyamaka dialectic in devotional form) to the purely devotional (Anantadeva's Padasyāṣṭakastotra, D1143, a layperson's head-to-foot praise of the Buddha). The stotra is the living proof that Buddhist emptiness and devotion are not opposed: the same Nāgārjuna who argued that nothing has inherent existence composed some of the most fervent praise hymns in the Indian Buddhist canon.

Ratnākaraśānti (रत्नाकरशान्ति, Tibetan: རཏྣ་ཨ་ཀ་ར་ཤཱན་ཏི, ratna a ka ra shAn ti) — "Ocean of Jewels, the Peaceful." An Indian Buddhist master active at Vikramaśīla monastery in the late tenth to early eleventh century CE. Ratnākaraśānti is notable for his attempt to synthesize the Yogācāra and Madhyamaka traditions, maintaining that all phenomena pass through four stages of realization: from the diversity of appearances, through mind-only, through the recognition of all appearance as delusion, to non-conceptual wisdom. His Prajñāpāramitā-bhāvanā-upadeśa ("Instructions on Meditating on the Perfection of Wisdom," D4078) is a concise meditation manual that leads the practitioner through these four stages, from detailed contemplation of the eighteen elements to the dissolution of all signs. His philosophical position holds that while all appearances are ultimately empty, the practice of meditation must proceed through each stage in sequence — the undoing requires the doing. The text was translated into Tibetan by the Indian paṇḍita Śrī Subhūtiśānti and the chief translator-monk Samādhibhadra.

Ratnāsūkośa (Tibetan: སྐྱེ་མེད་རིན་པོ་ཆེའི་མཛོད, sKye med rin po che'i mdzod) — "Precious Treasury of the Unborn." A Madhyamaka philosophical poem of fifteen verses attributed to Nāgārjunagarbha (ཀླུ་སྒྲུབ་སྙིང་པོ, "Heart of Nāgārjuna"), preserved in the Degé Tengyur, Madhyamaka section, Tohoku 3839. The text weaves devotional homage to Prajñāpāramitā, systematic Madhyamaka emptiness teaching, vivid impermanence meditation, and a critique of desire into a single arc. Its most striking image: "The hunter's melody is linked to the deer's very life" — the beauty that attracts is the beauty that kills. Its most compressed philosophical moment: four lines in which things become appearances, appearances become empty, phenomena lose all appearance, and emptiness itself is emptied. The title's "unborn" (skye med, Sanskrit ajāta or anutpāda) refers to the Madhyamaka teaching that phenomena never truly arise. The Sanskrit original is lost; the Tibetan was translated at Lhasa by Kanakavarman and Sūryakīrti. The authorship is debated: Butön attributed it to Nāgārjuna proper; other catalogues assign it to Āryadeva; the colophon names Nāgārjunagarbha as a distinct figure.

Adhimāna (अधिमान, Tibetan: མངོན་པར་རློམ་པ, mngon par rlom pa) — "Claim" or "presumption." A cognitive property in Buddhist epistemology that enables conceptualization to possess objects despite never grasping them directly. In Śaṅkarananda's Āpoha-siddhi (D4256), adhimāna is the key to resolving how conceptual thought can meaningfully engage with objects: since conceptualization does not cognize objects as they actually are (it never touches the particular), and since mere appearance would make it indistinguishable from non-conceptual cognition, there must be an additional cognitive property that makes conceptualization what it is. Adhimāna is that property — it is the "claim" that what cognition presents is the object, even when cognition's own aspect does not match the external object. Śaṅkarananda compares it to desire: just as desire is a property of cognition distinct from cognition itself, so adhimāna is a distinguishing feature of cognition that operates through heightened adherence (adhyavasāya). Through adhimāna, conceptualization engages with objects by superimposing the nature of before-and-after and externality upon its own self — not because these properties exist in cognition, but because this superimposition is the mechanism by which conceptual thought engages with the world. The relationship between adhimāna and adhyavasāya is intimate: adhimāna is the property; adhyavasāya is the cognitive act through which it operates. The concept is central to the apoha theory's account of how language and thought function without requiring access to positive universals.

Adhyavasāya (अध्यवसाय, Tibetan: ལྷག་པར་ཞེན་པ, lhag par zhen pa) — "Determination" or "ascertainment." A central concept in Buddhist epistemology, particularly in Dharmottara's theory of valid cognition. Adhyavasāya is the cognitive act by which consciousness determines its object in a way that enables practical engagement — specifying the object's place, time, and nature so that one can act upon it. Dharmottara distinguishes it sharply from grasping (grāhya, Tibetan: གཟུང་བ, gzung ba): perception grasps a momentary particular, but this bare grasping, being of a single instant, cannot by itself guide action. It is adhyavasāya — the determination that "this is here, now, of this kind" — that constitutes the functional result (phala) of valid cognition and enables the person to engage with the world. In the Pramāṇaparīkṣā (D4249), Dharmottara argues that the function (bya ba) of valid cognition is not grasping but determination: perception determines by making its object seen; inference determines by establishing the unseen through reliable evidence. The concept resolves a paradox: if perception grasps only a vanishing instant, how does it lead to attainment? Through adhyavasāya — the grasped instant is determined as a continuum of a particular type, enabling practical engagement. Even erroneous cognition may function as valid cognition if its determination is non-deceiving regarding the object of engagement. The term is closely related to niścaya (ངེས་པ, nges pa, "ascertainment") and yoṅs su bcad pa (ཡོངས་སུ་བཅད་པ, "delimitation"), both used as synonyms in Dharmottara's treatises.

Dharmottara (धर्मोत्तर, Tibetan: ཆོས་མཆོག, chos mchog) — "Supreme Dharma." An Indian Buddhist philosopher and epistemologist (c. 740–800 CE), one of the most important commentators on Dharmakirti's logical works. Active in Kashmir, Dharmottara wrote extensive commentaries on the Nyayabindu and Pramanaviniscaya, making Dharmakirti's dense arguments accessible to generations of scholars. Several of his independent treatises survive in the Pramāṇa section of the Degé Tengyur. The Paraloka-siddhi ("Establishing the Other World," D4251) presents a compact argument that consciousness possesses its own causal stream distinct from the physical body, against the materialist (Carvaka) position that mind is merely a product of the elements. The argument turns on the distinction between subjective experience (pleasure, pain) and objective perception (form, color): since these are demonstrably different in nature, consciousness cannot be identical with the body. He further argues that habitual imprints (vasana, Tibetan: བག་ཆགས, bag chags) establish an independent mental continuum, and that the diversity of intelligence among children born to the same mother proves each being carries a unique stream of consciousness from prior lives. The Kṣaṇabhaṅga-siddhi ("Establishing Momentariness," D4253) is his most systematic surviving defense of the Buddhist doctrine that all conditioned phenomena perish the instant they arise — the most contested proposition in Indian epistemology. Its companion text, the Kṣaṇabhaṅgasiddhi-vṛtti ("Commentary on Establishing Momentariness," D4254), is Dharmottara's own auto-commentary, unpacking every phrase of the root text: defining key terms, explaining the structure of each objection, and showing precisely how each refutation works. Both are first English translations in the Good Work Library (2026). The argument proceeds through a series of objections and refutations addressing causal efficacy, the meaning of "moment," the possibility of recognition across time, and the logical structure of inference. The decisive proof is the svabhāva-hetu (nature-reason): since whatever exists must act either sequentially or simultaneously, and non-momentary entities cannot coherently account for either mode, existence is pervaded by momentariness. His two-part Pramāṇaparīkṣā ("Examination of Valid Cognition," D4248–D4249) is Dharmottara's most substantial independent philosophical work. Part One investigates whether "valid cognition" applies by arbitrary convention or principled reason, arguing through the relationships of grasping, engagement, and attainment that only cognition which is non-deceptive regarding practical function deserves the name. Part Two develops the positive theory: valid cognition is defined by ascertainment enabling engagement. Both parts are first English translations in the Good Work Library (2026). The D4251 was translated into Tibetan by Pa-tsab Nyima Drak; D4253 was translated by the paṇḍita Kalyāṇarāja and the translator-monk Lodan Sherab (བློ་ལྡན་ཤེས་རབ).
Jñānaśrīmitra (ज्ञानश्रीमित्र, Tibetan: ཛྙཱ་ན་ཤྲཱི་མི་ཏྲ, jnA na shrI mi tra) — "Friend of Glorious Wisdom." An Indian Buddhist epistemologist and philosopher active at Vikramaśīla monastery in eastern India (c. 975–1025 CE). The teacher of Ratnakīrti, Jñānaśrīmitra represents the final flowering of the Dignāga-Dharmakīrti tradition of Buddhist logic before the destruction of Indian Buddhism. His surviving works, preserved only in Tibetan translation in the Tengyur, include the Kāryakāraṇabhāvasiddhi ("Establishing the Nature of Cause and Effect," D4258), a compact treatise in eleven verses with auto-commentary arguing that causal relationships are established through direct perception (pratyakṣa) and non-apprehension (anupalabdhi) in three divisions, against opponents who require five types of evidence. His works are frequently cited in Tibetan scholastic literature but almost none had been translated into English prior to the Good Works Library's translations. Within decades of his death, Vikramaśīla was destroyed by Bakhtiyar Khilji's armies (1193 CE) and the Indian Buddhist intellectual tradition effectively ended.

Ratnākaraśānti (रत्नाकरशान्ति, Tibetan: རིན་ཆེན་འབྱུང་གནས་ཞི་བ, rin chen 'byung gnas zhi ba) — "Jewel-Source of Peace," also known as Śāntipa. An Indian Buddhist philosopher and scholar (c. 970–1050 CE), one of the great panditas of Vikramaśīla monastery in northeastern India. A contemporary of Jñānaśrīmitra and Ratnakīrti, and one of the teachers of Atiśa Dīpaṃkaraśrījñāna, who brought Buddhism to Tibet during the Second Diffusion. Ratnākaraśānti's philosophical work synthesizes Yogācāra and Madhyamaka perspectives. Two of his works are preserved in the Pramāṇa section of the Degé Tengyur: the Vijñaptimātratāsiddhi ("Establishing Cognition-Only," D4259), proving that the three realms are nothing but cognition through the self-luminosity of consciousness; and the Antaravyāpti ("Internal Pervasion," D4260), arguing that logical pervasion is grasped internally within the subject itself rather than through external examples. The Degé colophon consistently identifies him as mkhas pa chen po rin chen 'byung gnas zhi ba ("the great learned one, Jewel-Source of Peace"). Not to be confused with Ratnakīrti (rin chen grags pa, "Jewel of Fame"), who was Jñānaśrīmitra's student — a different scholar from a different philosophical lineage.

Antaravyāpti (अन्तरव्याप्ति, Tibetan: ནང་གི་ཁྱབ་པ, nang gi khyab pa) — "Internal pervasion." A position in Buddhist epistemology holding that logical pervasion (vyāpti) — the universal relationship between a reason and what it proves — is grasped directly within the subject under debate, without requiring a separate external example (dṛṣṭānta). The opposing position, bahirvyāpti ("external pervasion"), holds that pervasion must be grasped through an example, such as the classic analogy of inferring fire from smoke in a kitchen. Ratnākaraśānti is the chief proponent of internal pervasion in the Degé Tengyur; his Antaravyāpti (D4260) argues that external examples are pedagogical concessions for confused minds, while the intelligent grasp pervasion directly from the subject. The debate centers on the momentariness argument: since existence is defined by causal efficacy (arthakriyā), and causal efficacy requires momentariness, existence is pervaded by momentariness — and this pervasion can be grasped from the subject itself without recourse to the pot-example or the kitchen-smoke illustration.

Arthakriyā (अर्थक्रिया, Tibetan: དོན་བྱ་བ་བྱེད་པ, don bya ba byed pa) — "Causal efficacy" or "performing a function." The Buddhist criterion for real existence: whatever is real must be capable of producing an effect. This principle, central to the Dharmakīrti tradition, grounds the proof of momentariness (kṣaṇavāda): since whatever exists must perform a function, and functions require either sequential or simultaneous action, and neither mode is possible for permanent (non-momentary) entities without contradiction, all existent things must be momentary. In Ratnākaraśānti's Antaravyāpti (D4260), arthakriyā is the opening move: "Here, what exists is what performs a function. There is no other reasonable definition of existence." The concept forms the bridge between Buddhist ontology (what exists) and epistemology (how we know it).

Ratnakīrti (रत्नकीर्ति, Tibetan: རཏྣ་ཀཱིརྟི, ratna kIrti) — "Jewel of Fame." An Indian Buddhist scholar-monk of the late tenth to early eleventh century CE, active at Vikramaśīla monastery. A student of Jñānaśrīmitra and one of the last major Buddhist logicians of India before the destruction of Vikramaśīla by the Khalji dynasty (1203 CE). In the Tibetan Tengyur, Ratnakīrti is the author of two major works: the Kalyāṇakāṇṭa-nāma-prakaraṇa ("The Trunk of Virtue," D4080), a systematic treatise that maps the entire Buddhist path from ethical roots to the crown of buddhahood, and the Dharma-viniścaya-nāma-prakaraṇa ("Ascertaining Dharmas," D4084), a philosophical treatise that defends the irreducibility of luminous consciousness against nihilistic Madhyamaka through a spirited dialectical debate. The text moves through the sixteen unwholesome acts and their reversals, the Four Noble Truths according to multiple philosophical schools, the ten perfections each divided into three aspects, a philosophical survey of the Vaibhāṣika (Western and Kashmiri), Sautrāntika, and Yogācāra views, and culminates in the nine minds of compassion and the bodhisattva's aspiration. The text was translated from Sanskrit into Tibetan by Paṇḍita Vidyākarasiṃha and translator Mañjuśrīvarma. Not to be confused with the fifth-century student of Candragomin mentioned in the Śiṣyalekha (D4183).

Ratnavajra (रत्नवज्र, Tibetan: རིན་ཆེན་རྡོ་རྗེ, rin chen rdo rje, "Precious Thunderbolt") — A Kashmiri Brahmin Buddhist scholar described in the Tengyur colophon as "a great scholar from the land of Kashmir who had attained siddhi." Author of the Yuktiprayoga ("Application of Reasoning," D4265), an eight-verse philosophical text in the Epistemology (Pramāṇa) section of the Degé Tengyur that argues for the luminous, non-conceptual nature of reality. The text is remarkable for its compressed synthesis of Yogācāra and Madhyamaka perspectives: beginning from the dissolution of agent, action, and object into nonduality, it moves through the unreality of external objects and the primacy of direct experience, declares that all things are "nothing but luminosity" (འོད་གསལ), and concludes that when conceptual thought is seen to be without essence, "purity and wisdom are liberation." The colophon's description of Ratnavajra as having "attained siddhi" (དངོས་གྲུབ་བརྙེས་པ) suggests he was recognized not merely as a scholar but as an accomplished practitioner. The text was translated into Tibetan by the Indian paṇḍita Śrīsubhūtiśānti and the chief translator-monk Samādhikuśala. First English translation: Good Works Library (2026).

Sattvārādanastava (सत्त्वाराधनस्तव, Tibetan: སེམས་ཅན་མགུ་བར་བྱ་བའི་བསྟོད་པ, sems can mgu bar bya ba'i bstod pa) — "Praise for Pleasing Sentient Beings." A short Buddhist praise text attributed to Nāgārjuna, Tohoku 1125 in the Degé Tengyur. The text presents the Buddha speaking in the first person, declaring that compassion for sentient beings is the only true devotion — "Devotion to me is for the sake of beings; there is no other devotion." The Buddha identifies himself completely with beings: harming them harms him; helping them is the supreme offering. The culminating verse states: "By practicing toward beings in just this way — therefore, I am Buddha." The Tibetan colophon identifies the text as a versification by Nāgārjuna of passages from the "Salt River" sūtra of the Bodhisattva-piṭaka. It was translated into Tibetan by the great Indian paṇḍita Dīpaṃkara Śrījñāna (Atiśa, 982–1054 CE) and the translator-monk Tshul khrims rgyal ba.

Udānakathā (उदानकथा, Tibetan: ཆེད་དུ་བརྗོད་པའི་གཏམ, ched du brjod pa'i gtam) — "Advice in Categorical Statements" or "Discourse of Inspired Utterances." A short ten-verse self-exhortation poem attributed to Mahārṣi Candra (དྲང་སྲོང་ཆེན་པོ་ཟླ་བ, "the Great Sage Moon"), preserved in the Degé Tengyur, Epistles section, Tohoku 4173. The Sanskrit title contains udāna — a genre of inspired, purposeful speech (Tibetan: ched du brjod pa, "stated with purpose") distinct from the Vedic meaning of udāna as the upward-moving breath. The Buddhist udāna denotes spontaneous, deliberate utterance — a statement made because it demands to be spoken. In the Pāli canon, the Udāna is a collection of such inspired utterances of the Buddha. In this Tengyur text, the author addresses his own mind (སེམས་ཁྱོད, "O mind") with unflinching urgency on five themes: the inescapability of death, the impermanence of life, the solitude of dying, the corruption of the degenerate age, and the refuge of the compassionate Buddha. The poem's most vivid images: a ship rushing unwillingly into a sea-monster's jaws, dewdrops evaporated by the sun, the hosts of Yama gazing with joyful faces, the disciplined growing lax and becoming servants of householders. The closing verse reveals the text was composed "to tame my own mind" — making it a rare instance of philosophical self-therapy in verse form. The Sanskrit original is lost; translated into Tibetan by Lotsāwa Tshul khrims rgyal ba.

Upāsaka (उपासक, Tibetan: དགེ་བསྙེན, dge bsnyen) — "Lay devotee" or "lay practitioner." A Buddhist who has taken the five precepts (pañcaśīla) but has not entered monastic ordination. The upāsaka/upāsikā (male/female) forms one of the four assemblies of Buddhist practitioners alongside monks (bhikṣu), nuns (bhikṣuṇī), and female lay devotees (upāsikā). In the Tengyur, Candragomin is perhaps the most celebrated upāsaka — his Nyāyālokasiddhi (D4242) explicitly signs "by me, an upāsaka," confirming his lay status in the dedication verse. Anantadeva — author of the Padasyāṣṭakastotra (D1143) — is similarly identified as an upāsaka, making both rare instances of a layperson's voice preserved in the canon alongside the great monastic scholars and philosophers.

Svabhāva (स्वभाव, Tibetan: རང་བཞིན, rang bzhin) — "Self-nature," "own-being," or "intrinsic existence." The central target of Madhyamaka philosophical critique. Svabhāva denotes the hypothetical inherent, independent existence that things would possess if they existed "from their own side" — without depending on causes, conditions, or conceptual designation. The entire Madhyamaka project, from Nāgārjuna's Mūlamadhyamakakārikā onward, is devoted to demonstrating that nothing possesses svabhāva: things arise dependently and are therefore empty (śūnya) of fixed self-nature. The anonymous Akṣaraśataka (D3834) — a compressed Madhyamaka catechism in twenty-one aphorisms — states simply: "Self-nature is merely declared" (rang bzhin brjod par bya'o). The word can be asserted, but the thing it names cannot be established by desire, convention, or logical proof. The critique of svabhāva is not nihilism — it is the precise mechanism by which Madhyamaka opens the ground for dependent origination (pratītyasamutpāda): because nothing has fixed self-nature, everything can arise, change, and cease in mutual dependence.

Vajradhara (वज्रधर, Tibetan: རྡོ་རྗེ་འཆང, rdo rje 'chang) — "Vajra-Holder." The primordial Buddha (ādibuddha) of the Vajrayāna tradition, regarded as the dharmakāya in its most exalted form and the source from which all tantric teachings flow. Unlike the historical Buddha Śākyamuni (a nirmāṇakāya), Vajradhara is the ultimate nature of all Buddhas — not a historical figure but the ground of awakened reality itself. In the Kagyü lineage, Vajradhara is the first teacher from whom the transmission of the mahāmudrā originates. The Mahāvajradharastotra (D1126) — a tantric praise extracted from the Mahākāśatantra and attributed to Vajrapāṇi — maps eight aspects of Vajradhara: the inseparable two truths, the body of space, Vajrasattva, the five Buddhas within the five aggregates, the captain who navigates the ocean of saṃsāra, the vajra master, the king of physicians who heals the plague of views, and the great lotus who abides in luminous clarity unstained by conceptual thought.

Vajrasattva (वज्रसत्त्व, Tibetan: རྡོ་རྗེ་སེམས་དཔའ, rdo rje sems dpa') — "Vajra Being." A central figure in Vajrayāna Buddhism, closely associated with primordial purity and the purification of karmic obscurations. In the tantric maṇḍala, Vajrasattva often appears as the sambhogakāya manifestation of the primordial Buddha Vajradhara. The Hundred-Syllable Mantra of Vajrasattva is one of the most widely practiced purification liturgies in Tibetan Buddhism. In the Mahāvajradharastotra (D1126), Vajrasattva appears as an epithet of Vajradhara, emphasizing his space-like nature: "Without conceptual thoughts of virtue or non-virtue, without mental engagement or deliberation — by nature, you are like space. Homage to you, Vajrasattva."

Vandanā (वन्दना, Tibetan: ཕྱག་འཚལ, phyag 'tshal) — "Prostration," "adoration," or "homage." The devotional practice of bowing before the Buddha, the dharma, and the saṅgha — one of the most physically embodied Buddhist practices, in which the practitioner touches five points (forehead, two palms, two knees) to the ground. Vandanā is the first of the seven limbs of worship (saptavidha anuttarapūjā) and appears in virtually every Buddhist liturgy across all traditions. Nāgārjuna's Vandanāstotra (D1136, "Praise in Adoration") is a seven-verse hymn of prostration that moves through the Buddha's renunciation, awakening, physical marks, radiant power, attainment, and compassionate entry into nirvāṇa, ending with a dedication of merit. That the philosopher of emptiness composed a hymn of bowing demonstrates the Madhyamaka teaching that emptiness and devotion are not opposed: one bows precisely because nothing is fixed.

Śrīgupta (श्रीगुप्त, Tibetan: དཔལ་སྦས, dpal sbas) — "Hidden Glory" or "Protected by Glory." An Indian Madhyamaka philosopher, likely active in the seventh or eighth century CE. Śrīgupta was a teacher of Jñānagarbha, who in turn taught Śāntarakṣita, placing him in the direct lineage that synthesized Madhyamaka and Yogācāra approaches (the Svātantrika-Madhyamaka). His Tattvāvatāravṛtti ("Commentary on Entering into Reality," Tohoku 3892) preserves an early formulation of the ekānekaviyogahetu — the reasoning of "neither one nor many" — which was later formalized by Śāntarakṣita in his Madhyamakālaṅkāra. The text demolishes both external realism (by showing atoms cannot be one or many) and idealism (by applying the same reasoning to consciousness), then establishes that conventional reality functions precisely through its lack of ultimate nature.

Śrīvanaratna / Vanaratna (श्रीवनरत्न, Tibetan: དཔལ་ནགས་ཀྱི་རིན་པོ་ཆེ / ནགས་ཀྱི་རིན་ཆེན, dpal nags kyi rin po che / nags kyi rin chen) — "Precious Jewel of the (Glorious) Forest." A Nepalese Buddhist paṇḍita (1384–1468), one of the last great masters to transmit teachings from South Asia to Tibet, making three journeys across the Himalayas during the fifteenth century. Composer of at least three texts in the Tengyur: the Buddhastava-daśa ("Ten Praises of the Buddha," D1154), a devotional hymn of ten verses praising Śākyamuni; the Gaṇeśvarasya stavaḥ ("Praise of Gaṇeśvara," D1175), a philosophically radical hymn identifying the elephant-headed Lord of Hosts with the non-duality of the two truths of Madhyamaka; and the Śrī Śabarapāda Stotra Ratnam ("Jewel Praise of Śabarapāda," D1176), a twenty-four-verse devotional masterpiece praising his spiritual ancestor Śabarapāda. D1176 opens with a name-acrostic on the syllables ŚA-BA-RA, then systematically reads every ornament of the Mahāsiddha's body as a philosophical truth — skull garlands as the two truths united, bone necklace as compassion, ashes as the immutable mind, dreadlocks as luminosity in union. Translated into Tibetan by Kumāraśrī at Ding-ri, in Vanaratna's presence — conventional and ultimate simultaneously. Both texts were translated into Tibetan by Sāgarasena (རྒྱ་མཚོའི་སྡེ, "Ocean Host"), a bhikṣu and yogācāra practitioner at the monastery of Śrī Govicandra in Yerang, Nepal. The colophon of D1175 records that Sāgarasena received the text "upon the crown of his head" with "undiminished devotion and boundless joy" — a traditional gesture of reverence confirming the direct teacher-student relationship. The Tengyur also preserves a third text connected to Vanaratna: the Śrī Guru Vanaratna Stotra Saptakam ("Sevenfold Praise of Guru Vanaratna," D1177), a devotional hymn composed by the lay devotee (upāsaka) Nyimapa of Magadha and translated into Tibetan by the translator of Tsetang, Shönnu Pal (Kumāraśrī). This text sits immediately after D1176 — a praise of Śabarapāda composed by Vanaratna himself — forming a chain of devotion across generations: the master praises his spiritual ancestor, and the student praises the master. The honorific prefix Śrī ("Glorious") distinguishes the formal title from the personal name.

Svātantrika (स्वातन्त्रिक, Tibetan: རང་རྒྱུད་པ, rang rgyud pa) — "Those Who Use Independent [Syllogisms]." One of the two major sub-schools of Madhyamaka philosophy, distinguished from the Prāsaṅgika by its willingness to advance positive logical arguments (svatantra-anumāna) rather than relying solely on reductio ad absurdum. The Svātantrika approach, systematized by Bhāviveka (c. 500–570 CE) and refined by Śāntarakṣita (c. 725–788 CE), accepts that phenomena have conventional existence established by valid cognition, even while denying their ultimate existence. The Svātantrika-Yogācāra synthesis — the "ascending staircase" method — first refutes external objects using Yogācāra arguments (atoms cannot be established as one or many), then refutes mind-only using Madhyamaka arguments (consciousness cannot be both subject and object), arriving at emptiness through a graduated ascent rather than a single dialectical stroke. This method appears in Śrīgupta's Tattvāvatāravṛtti (D3892), in Vidyākaraprabha's Madhyamakanayasārasamāsaprakaraṇa (D3893), and most famously in Śāntarakṣita's Madhyamakālaṅkāra. The lineage of transmission runs Śrīgupta → Jñānagarbha → Śāntarakṣita → Kamalaśīla. The Tibetan Gelug school, following Tsongkhapa, ultimately sided with the Prāsaṅgika interpretation, but the Svātantrika texts remain philosophically foundational.

Vidyācaraṇasampanna (विद्याचरणसम्पन्न, Tibetan: རིག་པ་དང་ཞབས་སུ་ལྡན་པ, rig pa dang zhabs su ldan pa) — "Endowed with Knowledge and Conduct." The fifth of the nine epithets in the Buddha recollection formula (Buddhānusmṛti). Vasubandhu's Buddhānusmṛti-ṭīkā (D3987) offers three interpretations: (1) the Noble Eightfold Path, where right view is "knowledge" (eyes) and the remaining seven limbs are "conduct" (feet); (2) the three trainings, where higher wisdom is "knowledge" and higher discipline and concentration are "conduct" practiced first; (3) the three superknowledges (recollection of previous lives, knowledge of death-transfer and rebirth, knowledge of the exhaustion of defilements), with their prerequisites (the six aspects of discipline, the perfection of practice, the perfection of restraint, and the four dhyānas) as "conduct." The epithet identifies the causal path by which the Buddha attained the perfection of teacherhood.

Vidyākaraprabha (विद्याकरप्रभ, Tibetan: རིག་པའི་འོད་ཟེར, rig pa'i 'od zer) — "Light-Ray of Knowledge." An Indian Svātantrika-Madhyamaka philosopher, author of the Madhyamakanayasārasamāsaprakaraṇa ("Compendium of the Essence of the Middle Way," D3893) in the Degé Tengyur. The text is a systematic treatise employing the ascending staircase method: it opens with homage to the Buddha's realization of dependent origination, refutes external objects by demonstrating that atoms cannot constitute wholes, invokes Yogācāra scripture to establish mind-only as a provisional truth, then demolishes mind-only itself by showing that consciousness cannot be simultaneously subject and object. The treatise culminates in the two truths and dependent origination as the Madhyamaka resolution. The text was translated into Tibetan by Dpal brtsegs Rakṣita, one of the great early translators active under King Khri srong lde btsan (r. 755–797 CE). No Sanskrit original survives. First translated into English by the Tianmu tulku lineage (2026).

Śūnyatā (शून्यता) — "Emptiness." The Mahāyāna teaching that all phenomena lack inherent, independent existence — they arise dependently and are therefore empty of fixed self-nature. Not nihilism but the ground of possibility: because nothing is fixed, transformation is possible. The Heart Sutra's declaration — "form is emptiness, emptiness is form" — is the distillation. The first Tianmu Teaching takes śūnyatā as its foundation.

Śūnyatāsaptati (शून्यतासप्तति, Tibetan: སྟོང་པ་ཉིད་བདུན་ཅུ་པ, stong pa nyid bdun cu pa) — "Seventy Verses on Emptiness." One of Nāgārjuna's Five Collections of Reasoning (Yuktikāya), preserved in the Degé Tengyur as Tohoku 3827. In seventy-three stanzas (the title "seventy" is approximate, following Indian convention), the text systematically demonstrates the emptiness of all ontological categories: arising and ceasing, cause and effect, the twelve links of dependent origination, the three times, the conditioned and unconditioned, form and consciousness, action and agent. The central method is the tetralemma (catuṣkoṭi): each category fails when examined as existent, non-existent, both, or neither. Verses 40–42 contain the famous emanation analogy: the Buddha creates an emanation, that emanation creates another — both are empty, both are mere names. "Likewise, the agent is like an emanation; action is like the emanation's emanation." The text closes with the synthesis of emptiness and dependent arising: "Depending on this, this arises — this worldly way is not negated. But because what is dependent has no intrinsic nature, how could it exist? This is the certain truth." The Sanskrit original is lost; the Tibetan was translated by gZhon nu mchog, sNyan dar ma grags, and Khu.

Dīpankara (दीपंकर) — "He Who Kindles the Lamp." A Buddha of a previous age who prophesied that the ascetic Sumedha (the future Śākyamuni) would one day attain perfect buddhahood. In the Diamond Sutra, the Buddha tells Subhūti that nothing was adopted from the Tathāgata Dīpankara as the highest perfect knowledge — the prophecy was possible precisely because there was nothing fixed to transmit. Dīpankara is the twenty-fourth predecessor Buddha in the Theravāda lineage.

Duḥkha (दुःख, Pāli: Dukkha) — "Suffering," "unsatisfactoriness," or "dis-ease." The First Noble Truth: all conditioned existence involves duḥkha. Not merely pain but the pervasive quality of impermanence that makes even pleasant experiences ultimately unsatisfying. The recognition of duḥkha is the beginning of the path — the Buddha's first teaching after enlightenment.

Kāraka (कारक, Tibetan: བྱེད་པ་པོ, byed pa po) — "Agent" or "performer." In Madhyamaka philosophical analysis, the entity that performs an action (karma). The Akutobhayā Chapter 8 (Examination of the Agent and Action, karmakārakapariksha) demonstrates that the agent cannot be established independently of action: an agent that has already become an agent has no further function to perform, while one that has not yet become an agent has nothing with which to act. All nine possible combinations of agent-status and action-status fail under examination. The conclusion: the agent depends on the action, and the action depends on the agent — they arise only through mutual dependence (parasparāpekṣā), and this mutual dependence is itself the meaning of dependent origination applied to the categories of grammar and action.

Karma (कर्म) — "Action." The principle that intentional actions produce consequences that shape future experience, both within this life and across lives. Not fate but a dynamic process: karma is created by choices and can be transformed by choices. The Yiguandao Essentials for Leaving the World devotes its opening chapter to understanding karma as the mechanism of suffering and liberation.

Karmapatha (कर्मपथ, Tibetan: ལས་ཀྱི་ལམ, las kyi lam) — "Action-path." A technical Abhidharma term distinguishing the path through which karma operates from the karma itself. Vasubandhu's Verse 10 commentary in the Concise Meaning of the Verses from Treatises (D4103) draws a precise distinction: the three mental unwholesome deeds (covetousness, malice, wrong views) are action-paths pure — they ARE the path. The seven bodily and verbal deeds (killing through idle chatter) are both actions AND action-paths, because the volitions that motivate them proceed through those deeds as their channel. The term resolves how intentional mental states produce karmic consequences through bodily and verbal expression: the mental state is the engine, the bodily or verbal act is the road, and both together constitute the karmic event.

Maṅgala (मङ्गल, Tibetan: བཀྲ་ཤིས, bkra shis) — "Auspiciousness," "good fortune," or "blessing." A foundational concept in Buddhist liturgy, denoting the sacred quality of favorable conditions that lead to well-being and spiritual flourishing. Maṅgala prayers invoke the blessings of the Three Jewels, the five Tathāgatas, or the deities of the maṇḍala to consecrate a person, place, or occasion. The Tengyur preserves several maṅgala verse collections (D3781–D3785) — short benedictory poems designed to open or close empowerment ceremonies and ritual gatherings. The refrain "by that auspiciousness, may there be peace for all beings" (བཀྲ་ཤིས་དེས་ནི་སྐྱེ་དགུ་རྣམས་ལ་ཞི་བྱེད་ཤོག) summons auspiciousness into the present moment and place, transforming ordinary space into sacred ground.

Pañcānantarya (पञ्चानन्तर्य, Tibetan: མཚམས་མེད་ལྔ, mtshams med lnga) — "The Five Heinous Crimes" or "Five Acts of Immediate Retribution." The five gravest transgressions in Buddhist ethics, so severe that their karmic results ripen immediately at death without any intervening rebirth in a favorable realm: (1) killing one's father, (2) killing one's mother, (3) killing an arhat, (4) shedding the blood of a Buddha, and (5) creating a schism in the saṅgha. The Tibetan term mtshams med literally means "without interval" — the karmic retribution follows without pause. In Nāgārjuna's Narakoddhāra (D1137, "Deliverance from Hell"), the speaker confesses having committed all five: "I have killed my father and killed my mother. I have committed the five heinous crimes. I am plunged into unbearable, blinding darkness — save me, O Tathāgata!" The theological force of the text lies in its insistence that even these crimes do not place one beyond the Buddha's compassion.

Pañcatathāgata (पञ्चतथागत, Tibetan: དེ་བཞིན་གཤེགས་པ་ལྔ, de bzhin gshegs pa lnga) — "The Five Tathāgatas." Also known as the five Dhyāni Buddhas, five jinas, or five Buddha families. The organizing principle of Vajrayāna Buddhist cosmology: five enlightened beings presiding over the cardinal directions and the center, each representing the transmutation of an afflictive emotion into a wisdom. Vairocana (center) transmutes ignorance into the wisdom of the dharmadhātu. Akṣobhya (east) transmutes anger into mirror-like wisdom. Ratnasaṃbhava (south) transmutes pride into equalizing wisdom. Amitābha (west) transmutes desire into discriminating wisdom. Amoghasiddhi (north) transmutes envy into all-accomplishing wisdom. In tantric practice, the five families structure the maṇḍala, the empowerment ceremony, and the practitioner's own body and mind — each family associated with a color, element, syllable, and mode of enlightened activity. The Pañcatathāgatastava (D1164), attributed to Padmakaravarma, praises each of the five in sequence with their specific thrones, colors, mudrās, and wisdoms.

Bhagavat (भगवत्, Pāli: Bhagavā) — "Blessed One," "Fortunate One," or "Lord." One of the principal epithets of the Buddha, used extensively in sūtra literature. In the Diamond Sutra, Müller's translation retains the Sanskrit form throughout, lending the text a formal, liturgical quality. The term implies one who possesses the six attributes of sovereignty, dharma, fame, fortune, knowledge, and renunciation.

Bhikshu (भिक्षु, Pāli: Bhikkhu) — "Mendicant" or "almsman." A fully ordained Buddhist monk who has renounced worldly life and lives by the Vinaya (monastic code). The word literally means "one who begs" — the bhikshu subsists on alms collected in daily rounds. In the Dhammapada, the Buddha redefines the bhikshu not by outward form but by inner transformation: "A man is not a mendicant simply because he asks others for alms; he who adopts the whole law is a Bhikshu, not he who only begs." Chapter XXV of the Dhammapada is devoted entirely to the bhikshu's discipline.

Bodhisattva (बोधिसत्त्व, Pāli: Bodhisatta) — "Awakening being." In Mahāyāna Buddhism, one who aspires to full buddhahood for the sake of all sentient beings, delaying their own final liberation to help others. In Theravāda, the term refers specifically to Siddhārtha Gautama in his previous lives before attaining buddhahood — the Jātaka Tales narrate 547 such lives. The bodhisattva ideal is one of Buddhism's most radical ethical commitments: the vow to save all beings before yourself.

Pañcavidhā Parīkṣā (पञ्चविधा परीक्षा, Tibetan: རྣམ་པ་ལྔ་ལ་བརྟག་པ, rnam pa lnga la brtag pa) — "Fivefold analysis" or "examination in five ways." The central analytical method used in Madhyamaka philosophy to investigate whether any entity truly exists. The five modes examine whether a thing is: (1) identical with its basis, (2) different from its basis, (3) contained within its basis, (4) the container of its basis, or (5) the possessor of its basis. If the entity cannot be found under any of these five relations, it lacks inherent existence (svabhāva). The method is applied extensively in the Akutobhayā (D3829), particularly in the Examination of the Tathāgata (Chapter 22), where it demonstrates that even the Buddha cannot be established as a truly existent entity — and that this unfindability is itself the mark of the Tathāgata's nature.

Prajñā (प्रज्ञा) — "Wisdom" or "insight." Not intellectual knowledge but direct, nondual understanding of the nature of reality — particularly śūnyatā. One of the six perfections (pāramitā) of the bodhisattva path. The Prajñāpāramitā literature (the "Perfection of Wisdom" sūtras, including the Heart Sutra and Diamond Sutra) is devoted entirely to this faculty. Prajñā without compassion is cold; compassion without prajñā is blind.

Pratītyasamutpāda (प्रतीत्यसमुत्पाद, Tibetan: རྟེན་ཅིང་འབྲེལ་པར་འབྱུང་བ, rten cing 'brel bar 'byung ba) — "Dependent origination" or "arising in dependence on conditions." The foundational Buddhist teaching that all phenomena arise from causes and conditions, not from inherent self-nature, not from a creator god, not from chance, and not from nothing. The twelve links (dvādaśāṅga) — ignorance, formations, consciousness, name-and-form, the six sense bases, contact, feeling, craving, grasping, becoming, birth, aging-and-death — describe the mechanism of cyclic existence. Nāgārjuna's Pratītyasamutpādahṛdayavyākhyāna (D3837) classifies the twelve into three groups (affliction, karma, suffering) and demonstrates through eight analogies — a teacher's recitation, a lamp lit from a lamp, a face in a mirror, a seal pressed into wax, a magnifying glass kindling fire, a seed becoming a sprout, a sour fruit making the mouth water, and a sound becoming an echo — that results arise from causes without being either identical to or different from them. This is the middle way between eternalism and nihilism: nothing permanent transmigrates from life to life, yet rebirth is not causeless. The verse root text, the Pratītyasamutpādahṛdayakārikā (D3836), compresses the same teaching into seven and a half stanzas, listing the same eight analogies and concluding: "In this, there is nothing to clarify and nothing to posit. Look truly at reality itself — seeing truly, one is utterly liberated." Together D3836 and D3837 form a pair: the verses state, the prose unfolds.

Prātimokṣa (प्रातिमोक्ष, Tibetan: སོ་སོར་ཐར་པ, so sor thar pa; Pāli: pātimokkha) — "Individual liberation" or "that which liberates individually." The code of monastic discipline binding Buddhist monastics, consisting of 227 rules for fully ordained monks (bhikṣu) and 311 for nuns (bhikṣuṇī) in the Theravāda tradition, with variations across the Mūlasarvāstivāda and other Vinaya lineages. The Prātimokṣa is recited communally on new- and full-moon observance days (upoṣadha). The summary verse — "Commit no evil whatsoever; practice virtue abundantly; completely tame your own mind — this is the teaching of the Buddha" (sdig pa thams cad mi bya ste / dge ba phun sum tshogs par bya / rang gi sems ni yongs su gdul / 'di ni sangs rgyas bstan pa'o) — is among the most widely quoted verses in all of Buddhism, appearing in the Dhammapada (183), the Divyāvadāna, and Vasubandhu's Śāstra-gāthā-saṃgraha (D4102).

Pramāṇa (प्रमाण, Tibetan: ཚད་མ, tshad ma) — "Valid cognition," "means of knowledge," or "instrument of proof." The central concept in Indian epistemology — the means by which reliable knowledge is obtained. Different Indian philosophical schools accept different numbers of pramāṇas: the Cārvāka school accepts only one (perception), Dignāga's Buddhist tradition accepts two (perception and inference), Nyāya accepts four (adding comparison and testimony). Dignāga's Pramāṇasamuccaya ("Compendium of Valid Cognition") and Dharmakīrti's Pramāṇavārttika ("Commentary on Valid Cognition") together constitute the Buddhist pramāṇa tradition that dominated Indian philosophical discourse from the sixth century onward. The Epistemology section of the Tengyur (Tibetan: ཚད་མ, tshad ma, literally "valid measure") — Volume 174 of the Dergé edition, texts D4203–D4268 — preserves sixty-six treatises on this subject, including Dignāga's Ālambanaparīkṣā and Traikālyaparīkṣā (the latter attributed to Dharmapāla in some catalogues, but to Dignāga in the Tibetan colophon).

Pramāṇabhūta (प्रमाणभूत, Tibetan: ཚད་མར་གྱུར་པ, tshad mar gyur pa) — "Become the authority" or "become the standard of valid knowledge." An epithet of the Buddha asserting that he is himself the measure of truth — the living proof that liberation is possible. In Indian Buddhist epistemology (pramāṇavāda), the Buddha is not merely one who speaks truth but one whose entire being IS the standard by which truth is measured. Dignāga's Pramāṇasamuccaya opens with homage to the Buddha as pramāṇabhūta. The epithet appears in Agratṛṣṇa's Praise of the Glorious Lord of Great Awakening (D1153).

Prāpti (प्राप्ति, Tibetan: ཐོབ་པ, thob pa) — "Attainment." In Dharmottara's epistemology, the final term in the chain that defines valid cognition: cognition enables ascertainment, ascertainment enables engagement (pravṛtti), and engagement enables attainment of the object. Prāpti is not the physical grasping of a thing but the later cognition focused on the object — the moment when what was ascertained is confirmed through contact. Dharmottara argues in the Pramāṇaparīkṣā (D4248) that attainment is the very nature of a later cognition focused on the determined object, not a separate event: "something would become of another's nature — absurdly excessive." The capacity to enable attainment is what makes a cognition valid, and this capacity is grounded in the cognition's arising from the object itself — if a cognition has not arisen from the determined object, being unconnected, it cannot enable attainment. Erroneous cognition is defined precisely by the failure of attainment: the cognition of water in a mirage does not enable attainment of water, and therefore is not valid cognition.

Pravṛtti (प्रवृत्ति, Tibetan: འཇུག་པ, 'jug pa) — "Engagement." In Buddhist epistemology, the practical activity of pursuing or avoiding an object based on cognitive ascertainment. Dharmottara's Pramāṇaparīkṣā (D4248) makes engagement the middle term between ascertainment and attainment: valid cognition ascertains the object's nature, place, and time; this ascertainment produces engagement; engagement leads to attainment. The object of engagement (pravṛtti-viṣaya) is whatever is ascertained by a given cognition as possessing a determinate nature capable of practical function — it is the object as determined, not the bare particular grasped by perception. Dharmottara argues that for engagement to succeed, place, time, and nature must all be correctly determined: engagement toward a different place or time "will never accomplish what is desired." The concept distinguishes valid from invalid cognition functionally rather than representationally — what matters is not whether the cognition mirrors reality, but whether it guides successful engagement.

Pratibandha (प्रतिबन्ध, Tibetan: འབྲེལ་བ, 'brel ba) — "Necessary connection" or "invariable concomitance." The key concept in Dharmakīrtian Buddhist epistemology that grounds the validity of inferential reasoning. Pratibandha is the bond between the logical reason (hetu) and the property to be proven (sādhya) that makes an inference reliable rather than accidental. Dharmakīrti identifies two types: tādātmya (identity relation — the reason IS the property, as "this is a tree" entails "this is a plant") and tadutpatti (causal connection — the reason is causally produced by the property, as "where there is smoke there is fire"). Śaṅkarānanda's Pratibandhasiddhi (D4257), "Establishing Relations," argues in twenty-one verses that this necessary connection is not built by the mind but uncovered through analysis — it resides in the very nature of properties possessing identity. The connection cannot hold between separate substances; it is the identity of a single property possessing one self. Valid cognition and its objects are mutually established — each validates the other — and certainty arises not from an external root of valid cognition but from the analysis of properties that share an essential nature.

Śaṅkarānanda (शङ्करानन्द, Tibetan: ཤཾ་ཀ་རཱ་ནན་ད, shaM ka rA nan da) — "Joy of Śaṅkara." A tenth-century Indian Buddhist logician, born into the Brahmin caste, a lay practitioner (upāsaka). The Tibetan colophon of his Pratibandhasiddhi (D4257) describes him as "known in the world as the second Dharmakīrti" — a sobriquet reflecting his mastery of Pramāṇa (epistemological) reasoning. His works in the Degé Tengyur include treatises on the necessary connection (pratibandha) that grounds valid inference, continuing and defending the tradition established by Dharmakīrti (7th century). He should be distinguished from both the original Dharmakīrti and from Dharmakīrti of Suvarṇadvīpa (10th–11th century), who was Atiśa's teacher. His Pratibandhasiddhi was translated into Tibetan by Paṇḍita Bhāgyarāja and the great translator Loden Sherab (བློ་ལྡན་ཤེས་རབ).

Prabhāsvara (प्रभास्वर, Tibetan: འོད་གསལ, 'od gsal) — "Luminosity," "clear light," or "radiant clarity." The innate luminous nature of mind, which is obscured by adventitious defilements but never destroyed. In the Pāli tradition, the concept appears in the Aṅguttara Nikāya (I.10): "Luminous is this mind, monks — it is defiled by adventitious defilements." In Yogācāra-Madhyamaka synthesis, prabhāsvara names the ground of all experience: prior to conceptual elaboration, prior to the subject-object split, mind is naturally luminous. Ratnavajra's Yuktiprayoga (D4265) declares: "The mode of things, things themselves, self and other — are nothing but luminosity" — asserting that luminosity is not merely a quality of mind but the ultimate nature of all phenomena. The concept becomes central in tantric Buddhist traditions and in the Dzogchen and Mahāmudrā systems, where 'od gsal denotes the direct recognition of mind's natural state.

Paramāṇu (परमाणु, Tibetan: རྡུལ་ཕྲ་རབ, rdul phra rab) — "Atom" or "ultimate particle." The smallest indivisible unit of matter posited by Buddhist and Hindu Vaibhāṣika and Sautrāntika realists. In the Vaibhāṣika system, paramāṇus are partless, dimensionless points that aggregate to form perceptible objects. Dignāga's Ālambanaparīkṣā (D4205) mounts the definitive attack: atoms cannot be the object of perception because they do not appear to consciousness as atoms — we perceive pots and cups, not invisible particles. Aggregates of atoms fail differently: they lack substantial reality (dravyasat) of their own, like the double moon seen when pressing the eye. Since neither atoms nor aggregates can serve as external objects, Dignāga concludes that the object of perception must be internal — an appearance within consciousness. The argument was one of the most debated positions in Indian philosophy, provoking centuries of responses from Nyāya, Jain, and Buddhist realist thinkers.

Sākāravāda / Nirākāravāda (Sanskrit: साकारवाद / निराकारवाद; Tibetan: རྣམ་བཅས / རྣམ་མེད, rnam bcas / rnam med) — "With-aspect theory" and "without-aspect theory." Two opposing positions within Indian Buddhist epistemology concerning whether consciousness takes on the form of its object. The sākāravāda ("with-aspect") school, associated with Dignāga and Dharmakīrti, holds that consciousness cognizes objects by assuming their aspect — perception produces a mental image that resembles the external object. The nirākāravāda ("without-aspect") school holds that consciousness is formless and self-luminous, knowing objects directly without adopting their form. The debate is internal to the Yogācāra tradition and has no parallel in Madhyamaka, which considers both positions refuted: Śīlārya's Examining the Mind (D3906) argues that since neither the with-aspect nor the without-aspect theory can establish mind as a real entity, mind-only (sems tsam) is compromised from within — the same reasoning that the Yogācāra school uses to refute external objects refutes mind itself, "just as a fingertip cannot touch itself."

Puṇya (पुण्य, Tibetan: བསོད་ནམས, bsod nams) — "Merit." The karmic energy generated by virtuous actions — generosity, ethical conduct, devotion, meditation, and service. In Buddhist soteriology, puṇya is not abstract morality but a real force that shapes future experience: it determines the circumstances of rebirth, protects against misfortune, and ultimately supports the conditions for awakening. The Tengyur narrative of King Ashoka and the nāga (D4197) dramatizes the power of merit: military threats fail, but offerings to the Buddha's relics generate enough puṇya to subdue a nāga king who carried the jewels on his own shoulders. The text's assembly chants: "Merit is not burned by fire, nor destroyed by wind. Neither kings nor thieves can steal it away." Merit is the currency of the Buddhist moral universe — invisible, indestructible, and transferable.

Puṇyakṣetra (पुण्यक्षेत्र, Tibetan: བསོད་ནམས་ཞིང, bsod nams zhing) — "Field of merit." The Buddha (or the Saṅgha) conceived as fertile ground in which offerings of faith, generosity, and devotion bear karmic fruit. Just as a seed planted in rich soil yields abundant harvest, merit offered to the Buddha multiplies beyond measure. The metaphor pervades both Theravāda and Mahāyāna traditions. In Agratṛṣṇa's Praise of the Glorious Lord of Great Awakening (D1153), it is the final epithet before the dedication — the culmination of fourteen verses of accumulated praise, all of which the poet then gives away to beings in hell.

Kāsiṇa (Pāli: kāsiṇa; Sanskrit: kṛtsnāyatana, "totalization sphere") — A form of samatha (concentration) meditation in which the meditator fixes attention on a simple visible object — a disc of colored earth, water, fire, air, or a pure color (blue, yellow, red, white) — then "extends" the mental image of that quality to fill the entire field of perception, effectively making the whole universe appear as that quality. The ten kāsiṇas, systematized in Buddhaghosa's Visuddhimagga (5th century CE), are among the classical bases for achieving the jhāna states. Tang Huyen, in his 2003 analysis of the Brahmaviharas, identified the Four Divine Abodes as functioning like kāsiṇas: in the classical framework, one performs an act of "totalization" (kāsiṇa) — spreading love or compassion to fill the entire universe — as a purely mental operation. The kāsiṇa's defining characteristic is that nothing actually happens outside the meditator's mind: the totalization is a disciplined act of imagination that transforms the meditator's inner orientation, not the external world. In Abhidharma classification, kāsiṇa objects belong to the category of "acquired signs" (uggaha-nimitta and paṭibhāga-nimitta) — mental images derived from external objects that become stable bases for concentration when sufficiently internalized.

Karuṇā (करुणा) — "Compassion." The active wish that all beings be free from suffering. Together with prajñā (wisdom), karuṇā forms the two wings of the bodhisattva path — neither sufficient alone. The Eternal Mother's grief in Yiguandao theology is a form of cosmic karuṇā: the Mother who cannot rest while her children suffer.

Kamalaśīla (कमलशील, Tibetan: ཀ་མ་ལ་ཤཱི་ལ, ka ma la shī la) — "Lotus Discipline." Indian Buddhist philosopher (c. 740–795 CE), student of Śāntarakṣita, and one of the most consequential figures in the history of Tibetan Buddhism. When Śāntarakṣita predicted on his deathbed that doctrinal disputes would arise, he instructed the Tibetans to invite Kamalaśīla from India to resolve them. Kamalaśīla's debate against the Chinese Chan master Moheyan at the Council of Lhasa (c. 792–794 CE) — arguing that gradual cultivation, ethical conduct, and analytical meditation were essential to the path, against Moheyan's claim that sudden, non-conceptual meditation alone was sufficient — determined the direction of Tibetan Buddhism for the next twelve centuries. He is the author of the Bhāvanākrama ("Stages of Meditation"), a three-part treatise that became foundational for Tibetan meditation theory. In the Degé Tengyur, his Teaching on the Eight Kinds of Suffering (D4193), addressed to a student named Tsangyang of Lhoza, reveals the great philosopher in an intimate pastoral mode — bowing slightly before a single student and teaching in verse about birth, aging, sickness, death, and the four sufferings of desire. His Lamp of Generating Faith (D4195) is the comprehensive companion to D4193 — a complete verse guide to the foundations of the Buddhist path, moving from the precious human birth through impermanence, bodhicitta, ethical conduct, contentment, and a harrowing descent through the sufferings of samsara to the hell realms. Together, D4193 and D4195 reveal Kamalaśīla's full range: the focused teacher (D4193) and the visionary philosopher (D4195). Kamalaśīla was reportedly assassinated in Tibet; the circumstances remain disputed across Tibetan historical sources.

Pāramitā (पारमिता) — "Perfection" or "gone to the other shore." The six (or ten) qualities a bodhisattva cultivates across countless lifetimes: generosity (dāna), moral conduct (śīla), patience (kṣānti), effort (vīrya), meditation (dhyāna), and wisdom (prajñā). The Jātaka Tales can be read as a catalogue of the bodhisattva perfecting these pāramitās one life at a time.

Rāhulabhadra (राहुलभद्र) — An early Indian Mādhyamaka master, possibly a teacher or close disciple of Nāgārjuna. Author of the Prajñāpāramitāstotra (D1127), a twenty-one verse devotional hymn to the Perfection of Wisdom personified as a divine mother, grandmother of all beings. The Tibetan Tengyur attributes the text to Nāgārjuna following common colophon convention, but the Sanskrit manuscript tradition (preserved in Hahn's 1988 critical edition) consistently names Rāhulabhadra as the author. The hymn's central paradox — "Seeing you, one is bound; not seeing you, one is also bound. Seeing you, one is freed; not seeing you, one is also freed" — epitomizes Mādhyamika philosophy's refusal of all fixed positions, including the position of unfixity itself. The text was translated into Tibetan by the Kashmiri paṇḍita Tilakaghaṭa and Ngok Lotsāwa Loden Sherab (1059–1109).

Kalpavṛkṣa (कल्पवृक्ष, Tibetan: དཔག་བསམ་ཤིང, dpag bsam shing) — "Wish-fulfilling tree." A mythical tree in Buddhist and Hindu cosmology that grants all desires to those who sit beneath it. In Buddhist literature, the kalpavṛkṣa appears both as a feature of the heavenly realms and as a metaphor for the dharma, the Buddha, or the awakened mind. In Śrīvarman's Tattvastava (D1116), suchness is praised as "the wish-fulfilling tree of peace, adorned with the flowers of the limbs of awakening" — the ultimate refuge for beings "exhausted by the turning of existence." The image fuses two ideas: the tree provides rest and shade (peace), and its "flowers" are the seven limbs of awakening (bodhyaṅga) — mindfulness, investigation, effort, joy, tranquility, concentration, and equanimity.

Jātaka (जातक) — "Birth stories." A collection of 547 tales of the Buddha's previous lives as a bodhisattva, preserved in the Pāli Canon's Khuddaka Nikāya. In each life the future Buddha appears in a different form — king, merchant, animal, tree spirit — and demonstrates a virtue through sacrifice, wisdom, or compassion. The Jātaka Tales are among the oldest narrative literature in any language, with roots in pre-Buddhist Indian storytelling traditions. They were enormously influential across Southeast Asia, shaping art, architecture, and moral education for two millennia.

Dhammapada (Pāli) — "Path of the Dharma" or "Verses of the Law." A collection of 423 verses in 26 chapters, belonging to the Khuddaka Nikāya of the Pāli Canon. Traditionally understood as the direct speech of the Buddha, spoken on various occasions during his teaching career. The verses are pithy, memorable, often structured in twin pairs, and cover the entire ethical and contemplative range of Buddhism — from the nature of mind ("All that we are is the result of what we have thought") to the discipline of the self to the path to nirvāṇa. One of the most widely read and beloved texts in Theravāda Buddhism, and cherished across all schools.

Dhutaṅga (धूतांग, Tib. སྦྱངས་པའི་ཡོན་ཏན་, sbyangs pa'i yon tan) — "Ascetic qualities" or "purifying practices." A set of twelve voluntary austerities undertaken by Buddhist monastics to deepen renunciation and cut attachment to material comfort. The twelve are: forest dwelling, rag-robe wearing, alms-round, single-seat eating, sitting practice, not taking food afterward, three robes only, felt mat, sleeping wherever placed, charnel-ground dwelling, tree-root dwelling, and dwelling without shelter. In Ācārya Vīra's Discourse Showing the Good Path, each practice is defined by its vow and adorned with verse benefits, but the text warns that these are "chief requisites, not collections of pride" — citing Devadatta's fall through gain obtained via ascetic practice.

Dhyāna (ध्यान, Pāli: Jhāna) — "Meditation" or "absorption." A series of progressively refined states of meditative concentration. The four jhānas of the form realm and the four formless attainments constitute the classical Buddhist meditation map. The Buddha is said to have passed through all eight jhānas before entering Parinirvāṇa at Kushinagar.

Chan / Zen (禅; Chinese: Chán; Japanese: Zen; from Sanskrit Dhyāna) — The meditation school of East Asian Buddhism, tracing itself to the wordless transmission between Śākyamuni Buddha and Mahākāśyapa at Vulture Peak (see Língshān Huì) and to the legendary Indian monk Bodhidharma, who brought the lineage to China in the early 6th century. The cardinal teaching of classical Tang-dynasty Chan — "Your Mind is the Buddha" — is a direct expression of the Tathāgatagarbha doctrine: the luminous Buddha-nature is not to be sought elsewhere but recognized as the mind's own nature. Chan flourished in the Tang dynasty through a succession of iconoclastic masters — Huineng, Mazu, Linji, Yunmen Wenyan — whose teaching methods (shouts, blows, apparently nonsensical answers) were designed to shatter conceptual fixation. In Japan, Zen split into two major schools: Rinzai, emphasising sudden awakening through kōan practice, and Sōtō, emphasising continuous sitting (shikantaza) as itself the expression of awakening — the latter systematized by Dōgen Zenji in the 13th century. The name traces through: Sanskrit Dhyāna → Pāli Jhāna → Chinese Chán → Korean Seon → Japanese Zen.

Anicca (Pāli; Sanskrit: Anitya) — "Impermanence." One of the three marks of existence (with duḥkha and anattā). All conditioned phenomena arise, persist, and pass away. The Buddha's final words: "All conditioned things are impermanent. Work out your salvation with diligence."

Apoha (अपोह, Tibetan: གཞན་སེལ, gzhan sel; also ལྡོག་པ, ldog pa) — "Exclusion of the other" or "differentiation." The Buddhist theory of meaning developed by Dignāga and refined by Dharmakīrti, according to which words and concepts do not refer to positive entities but function by excluding everything other than the intended referent. When we say "cow," we are not grasping a universal "cow-ness" but excluding everything that is not-cow. In Dignāga's Traikālyaparīkṣā, apoha is the mechanism by which both children and sages operate on the worldly path — they distinguish objects through "nature and exclusion" (ངོ་བོ་ལྡོག་པ, ngo bo ldog pa). The theory is central to Buddhist logic's rejection of realist universals and its account of how language functions without requiring intrinsically existing referents. Śīlagupta's Verses on Examining Exclusion (D4246) is the most extensive surviving verse defence of the theory, concluding: "Therefore, words do not speak entities."

Arhat (अर्हत्, Pāli: Arahant) — "Worthy One." In Theravāda Buddhism, one who has attained nirvāṇa and will not be reborn — the highest goal of the Theravāda path. The Dhammapada describes the arhat as one who has abandoned grief, freed himself on all sides, and thrown off all fetters, whose path is difficult to understand "like that of birds in the air." In Mahāyāna Buddhism, the arhat ideal is sometimes distinguished from the bodhisattva ideal, though both represent complete liberation.

Ashoka (अशोक; Tibetan: མྱ་ངན་མེད, mya ngan med, "Sorrowless") — The Maurya emperor (r. c. 268–232 BCE) who unified most of the Indian subcontinent and became Buddhism's greatest royal patron after his conversion following the Kalinga war. His edicts, carved on pillars and rocks across the empire, constitute the earliest surviving written expressions of Buddhist ethics in governance. Ashoka is credited with convening the Third Buddhist Council, sending missionaries throughout Asia, and building 84, stupas to house the Buddha's relics. In Buddhist literature, his story is the paradigm of how worldly power can be transformed through devotion — the Tengyur's Epistles section includes several narratives about his encounters with monks and nāgas, including the taming of a nāga king through the power of merit rather than military force (D4197).

Anutpāda (Sanskrit: अनुत्पाद; Tibetan: སྐྱེ་མེད, skye med) — "Non-arising" or "the unborn." The Madhyamaka teaching that phenomena never truly arise — they appear to arise through dependent origination but lack any inherent origination. In the Mūlamadhyamakakārikā, Nāgārjuna opens with eight negations, of which the first is "without cessation and without arising" (anirodham anutpādam). The concept is central to texts like the Precious Treasury of the Unborn (Ratnāsūkośa, D3839), where it extends from a philosophical position to a contemplative realisation: ground, path, and fruition are all unborn, and seeing the truth of the unborn is itself the path of awakening.

Anattā (Pāli; Sanskrit: Anātman) — "Non-self." The teaching that there is no permanent, unchanging self or soul in any being or phenomenon. The five aggregates (skandhas) — form, feeling, perception, mental formations, and consciousness — arise and pass dependently, and no fixed "I" can be found among them.

Gāthā (गाथा, Pāli: Gāthā) — "Verse" or "hymn." In Buddhist literature, a stanza of poetry, typically four lines, used to express a teaching or insight. The Dhammapada is composed entirely of gāthās. In the Pāli Canon, gāthā sections of suttas often preserve older material than the surrounding prose, and many scholars believe verse collections like the Dhammapada and the Theragāthā represent the earliest stratum of Buddhist literature.

Kōan (公案, Chinese: gōng'àn) — Literally "public case." A paradoxical statement, question, or story used in Zen practice to provoke direct insight beyond conceptual thinking. Famous examples include "What is the sound of one hand clapping?" and "Does a dog have Buddha-nature?" The great kōan collections — the Gateless Gate (Wumenguan) and the Blue Cliff Record (Biyanlu) — are among the most distinctive literary forms in the Buddhist world. Dōgen's Shōbōgenzō works through kōans not as riddles to be solved but as living expressions of reality to be inhabited.

Paṭiccasamuppāda (Pāli; Sanskrit: Pratītyasamutpāda) — "Dependent Origination" or "Dependent Arising." The Buddha's teaching that all phenomena arise in dependence on conditions — nothing exists independently, nothing is self-caused. Traditionally formulated as a twelve-link chain (ignorance, formations, consciousness, name-and-form, six sense bases, contact, feeling, craving, clinging, becoming, birth, aging-and-death) that describes the mechanism of suffering and rebirth. The philosophical foundation of śūnyatā (emptiness) in the Mahāyāna traditions.

Kaitya (Sanskrit: caitya) — A sacred site, shrine, or stupa — a place worthy of veneration. In the Diamond Sutra, the Buddha declares that wherever a single Gāthā from the Prajñāpāramitā is recited, that place becomes "like a Kaitya for the whole world of gods, men, and spirits." The term encompasses both built structures (stupas housing relics) and natural sites sanctified by the Buddha's presence. The teaching implies that the dharma itself, not architecture, creates sacred space.

Avalokiteśvara (अवलोकितेश्वर, Chinese: 觀世音/觀自在, Guānshìyīn/Guānzìzài; Japanese: 観音, Kannon) — "The Lord Who Looks Down" or "The One Who Perceives the Sounds of the World." The bodhisattva of compassion, one of the most widely venerated figures in Mahāyāna Buddhism. In the Heart Sutra, Avalokiteśvara is the speaker — having practised the deep Perfection of Wisdom, he declares to Śāriputra that all five skandhas are empty. In East Asian Buddhism, Avalokiteśvara is often depicted in female form as Guanyin (Chinese) or Kannon (Japanese), the embodiment of mercy. The Dalai Lama is traditionally regarded as an emanation of Avalokiteśvara.

Prajñāpāramitā (प्रज्ञापारमिता) — "The Perfection of Wisdom." A genre of Mahāyāna sūtras devoted to the teaching of śūnyatā (emptiness), composed between the first century BCE and the fifth century CE. The literature ranges from the vast (the Perfection of Wisdom in 100, Lines) to the compressed (the Heart Sutra, at approximately 260 characters in Chinese). The Heart Sutra and the Diamond Sutra — the two most widely recited texts in East Asian Buddhism — belong to this literature. Called "the Mother of all Buddhas" because wisdom gives birth to awakening.

Māra (मार, Pāli: Māra) — "The Tempter" or "The Killer." In Buddhist cosmology, the personification of spiritual death — the force that opposes awakening. Māra assaulted the Buddha under the Bodhi tree with armies of demons, sensual temptations, and existential doubt; the Buddha's defeat of Māra is the moment of enlightenment. In the Dhammapada, Māra appears not as a cosmic demon but as the name for every temptation that distracts the mind from the path: "Mara will certainly overthrow him, as the wind throws down a weak tree." To conquer Māra is to conquer oneself.

Tathāgata (तथागत, Pāli: Tathāgata) — "Thus Come" or "Thus Gone." An epithet of the Buddha, used by the Buddha when referring to himself. The word is deliberately ambiguous — tathā-gata ("thus gone," one who has gone to the truth) or tathā-āgata ("thus come," one who has come from the truth). In the Dhammapada: "The Tathagatas (Buddhas) are only preachers. The thoughtful who enter the way are freed from the bondage of Mara." The title emphasizes the Buddha's nature as one who has fully arrived at — and departed from — the nature of reality.

Āyatana (आयतन, Tibetan: སྐྱེ་མཆེད, skye mched; Pāli: Āyatana) — "Sense field" or "base of cognition." The twelve āyatanas comprise the six sense faculties (eye, ear, nose, tongue, body, mind) and their six corresponding objects (visible form, sound, smell, taste, touch, mental phenomena). Together with the skandhas and dhātus, they constitute one of the three analytical frameworks the Buddha used to describe experiential reality. In the Akutobhayā's Chapter 3, the sense fields are examined through the same logical apparatus as motion: if seeing cannot see itself, it cannot see others; the seer, the seen, and seeing are mutually dependent and ultimately unestablished — like the goer, the going, and the gone.

Dhātu (धातु, Tibetan: ཁམས, khams; Pāli: Dhātu) — "Element" or "realm." In Buddhist analysis, the eighteen dhātus comprise the six sense faculties, six sense objects, and six corresponding consciousnesses — together constituting the complete field of experience. The term also denotes the six great elements (earth, water, fire, wind, space, consciousness). In the Akutobhayā's Chapter 5, the dhātus are examined through the relationship between an element and its defining characteristic (lakṣaṇa): space cannot exist before its characteristic, and an entity without characteristics cannot exist anywhere — "like pressing oil from sand."

Lakṣaṇa (लक्षण, Tibetan: མཚན་ཉིད, mtshan nyid) — "Characteristic" or "defining mark." The property that makes a thing what it is. In Madhyamaka analysis, the relationship between a thing and its characteristics is paradoxical: characteristics cannot apply to what already has them (redundant), nor to what lacks them (no substrate), nor to a third entity. The Akutobhayā illustrates this with the elephant: its tusks, trunk, bow-curved back, winnowing-basket ears, and thick round legs ARE the elephant — without them, no elephant exists for characteristics to apply to. This anticipates the bundle theory of substance: a thing is nothing over and above its properties.

Rāga (राग, Tibetan: འདོད་ཆགས, 'dod chags; Pāli: Rāga) — "Desire," "passion," or "attachment." One of the three root afflictions (mūlakleśa) alongside aversion (dveṣa) and ignorance (moha). In the Akutobhayā's Chapter 6, Nāgārjuna examines desire and the desirous (rakta) as mutually dependent: neither can exist independently of the other, they cannot arise sequentially (each requires the other to already exist), and they cannot arise simultaneously (simultaneity requires either identity or difference, both of which are untenable). The conclusion extends to all dharmas: nothing is established as either simultaneous or non-simultaneous — "like a house of spears."

Ākāśa (आकाश, Tibetan: ནམ་མཁའ, nam mkha') — "Space." One of the six great elements (mahābhūta) in Buddhist cosmology, alongside earth, water, fire, wind, and consciousness. Its defining characteristic (lakṣaṇa) is non-obstruction (anāvaraṇa). In Madhyamaka analysis, space becomes a crucial test case for the relationship between an entity and its defining characteristic: Buddhapālita's commentary on MMK Chapter 5 argues that space cannot exist before its characteristic (that would be a thing without characteristics), the characteristic cannot apply to something without characteristics (no substrate), and therefore space is established neither as an entity nor as a non-entity, neither as characterized nor as characteristic. The argument extends from space to all six elements. Space is philosophically important because it seems to be the easiest case for the realist — if even the "nothing" of empty space cannot be established as existing, then nothing can.

Bhāva (भाव, Tibetan: དངོས་པོ, dngos po) — "Entity," "existence," or "thing." In Madhyamaka philosophy, bhāva denotes anything posited as having real, independent existence — a "something" with its own nature (svabhāva). In Buddhapālita's commentary on MMK Chapter 5, the argument proceeds: no entity exists apart from the characterized thing and its characteristic; since both are unestablished, entity itself is unestablished. And without entity, non-entity (abhāva) — its logical counterpart — is also impossible, since non-entity is defined only in relation to entity, as darkness is defined in relation to light. The bhāva/abhāva pair is one of the fundamental dualities that Madhyamaka dismantles.

Abhāva (अभाव, Tibetan: དངོས་མེད, dngos med) — "Non-entity," "non-existence." The logical counterpart of bhāva (entity). In Madhyamaka, abhāva does not mean absolute nothingness but rather the absence or negation of a posited entity. Buddhapālita's commentary on MMK 5.6 makes the crucial argument: if entity is not established, non-entity cannot be established either, because non-entity depends on entity for its very meaning. This prevents the nihilistic misreading of emptiness — emptiness does not mean that things "don't exist" (abhāva), because that claim requires the prior establishment of what they would be (bhāva), which is itself untenable.

Lakṣya (लक्ष्य, Tibetan: མཚན་གཞི, mtshan gzhi) — "The characterized thing" or "that which bears the characteristic." The counterpart of lakṣaṇa (the characteristic itself). In Madhyamaka analysis, the lakṣya-lakṣaṇa relationship is examined as a case of mutual dependence: the characterized thing cannot exist without its characteristic (it would be a thing without characteristics — impossible), and the characteristic cannot exist without the characterized thing (it would have nothing to characterize). Neither precedes the other, neither is independent of the other, and yet they cannot arise simultaneously without being independent. Buddhapālita's Chapter 5 commentary makes this the central axis: once the characterized thing and the characteristic are both shown to be unestablished, no entity of any kind can stand.

Skandha (स्कन्ध, Pāli: Khandha) — "Aggregate" or "heap." The five components of experiential existence: form (rūpa), feeling (vedanā), perception (saññā), mental formations (saṅkhāra), and consciousness (viññāṇa). Together they constitute the apparent person, but no fixed self can be found in any of them individually or collectively.

Sugata (सुगत, Tibetan: བདེ་བར་གཤེགས, bde bar gshegs) — "Well-Gone One" or "Blissfully Gone." An epithet of the Buddha, indicating one who has gone well — gone to the good, gone to bliss, gone without remainder. Where "Tathāgata" emphasizes the mystery of the Buddha's nature (thus-come/thus-gone), "Sugata" emphasizes the quality of the going: the Buddha's departure from suffering is complete, clean, and blissful. The term appears frequently in Tibetan praise hymns, where the Sugata is the object of devotion and the aspiration of the dedication verse: "May all beings reach the Sugata's state."

Suvarṇadvīpa (सुवर्णद्वीप, Tibetan: གསེར་གླིང, gser gling) — "Gold Island." A historical Buddhist centre in the Malay Archipelago, most likely Sumatra, renowned as a hub of Mahāyāna and Vajrayāna learning between the 7th and 11th centuries. The name appears in Tibetan sources primarily as the epithet of Dharmakīrti of Suvarṇadvīpa (gser gling pa), the teacher under whom Atiśa (Dīpaṃkara Śrījñāna, 982–1054 CE) studied bodhicitta and the mind-training (lojong) lineage for twelve years during a sea voyage. This Dharmakīrti is distinct from the famous 7th-century logician who wrote the Pramāṇavārttika. The Buddhaparinirvāṇastotra (D1158, "Praise of the Buddha's Nirvāṇa") — an eleven-verse devotional lament for the Buddha's passing — is attributed to this Suvarṇadvīpa Dharmakīrti in the Degé Tengyur. Suvarṇadvīpa was also the seat of the Śrīvijaya empire, which patronised Buddhist scholarship and maintained monastic universities that attracted scholars from India, China, and Tibet.

Haripuñja (Sanskrit: हरिपुञ्ज; Tibetan: ཧ་རི་པུཉྫ, ha ri puny+dza) — A historical Buddhist kingdom in mainland Southeast Asia, identified with Haripuñjaya (modern Lamphun, northern Thailand). Founded by the legendary Queen Chama Thevi in the 7th century CE, Haripuñjaya was a major Mon Buddhist center that flourished for over six centuries before its absorption into the Lanna kingdom in 1292. The kingdom was a repository of Theravāda Buddhist culture linking the Indian Buddhist world to Southeast Asia. In the Tengyur, the land is named as the home of the Śākya monk Dharmasūrya (ཆོས་ཀྱི་ཉི་མ), author of the Jātakastotra (D1179) — the final text in the Stotra section — indicating that Buddhist literary culture of the Indian Sanskrit-Tibetan type had reached this Mon kingdom. The text's presence in the Tibetan canon suggests a broader network of Buddhist intellectual exchange between Southeast Asia, India, and Tibet than is often recognized.

Zazen (坐禅) — "Seated meditation." The central practice of Zen Buddhism. In Dōgen's Sōtō tradition, zazen is not a technique for attaining enlightenment but the enactment of enlightenment itself — shikantaza (只管打坐, "just sitting") with no object, no goal, and no separation between the practitioner and the practice. Dōgen's radical claim is that sitting is itself the expression of buddhahood, not a means to reach it. The practice of zazen is the practice of being what you already are.

Micchā diṭṭhi (Pāli; Sanskrit: Mithyādṛṣṭi) — "Wrong view" or "incorrect views." In the Buddha's teaching, wrong view is the root cause of all suffering — the foundational misperception that produces craving, aversion, and the cycle of rebirth. The classic catalogue of wrong views includes Eternalism (sassatavāda: the belief in a permanent, unchanging self or soul that persists after death) and Annihilationism (ucchedavāda: the belief that the self is simply extinguished at death with no further consequence). Both views, the Buddha argued, miss the middle teaching of dependent arising. The eight-fold path begins with right view (sammā diṭṭhi) — the direct counterpart and antidote.

Paṭisandhi-viññāna (Pāli) — "Relinking consciousness." In Theravāda Abhidhamma, the first moment of consciousness in a new existence — the arising of mind in a fertilised ovum at the moment of conception, conditioned by the karma of a preceding life. It is not a soul or entity that travels from one body to another; it arises dependently, kindled by unexhausted karma as a new flame is kindled from a dying one. The Dīgha Nikāya's Mahā Taṇhā-Sankhaya Sutta is explicit: consciousness does not migrate from one existence to the next — rather, the death-consciousness (cuti citta) of one existence conditions the arising of relinking consciousness in the next. The process preserves karmic continuity without requiring a permanent self.

Madhyamārthasaṃgraha (मध्यमार्थसंग्रह, Tibetan: དབུ་མའི་དོན་བསྡུས་པ, dbu ma'i don bsdus pa) — "Summary of the Meaning of the Middle Way." A short Madhyamaka treatise by Sucaritamiśra (Tibetan: Legs ldan byed), preserved in the Degē Tengyur (Tohoku 3857). In twenty-eight verses it constructs a complete taxonomy of the two truths: ultimate truth is divided into the enumerated (rnam grangs kyi don dam) and non-enumerated (rnam grangs ma yin pa'i don dam), the former further split into the ultimate of reasoning and the ultimate of the negation of arising; conventional truth is divided into correct (yang dag kun rdzob) — things capable of effective function — and false (log pa'i kun rdzob), the latter split into conceptual error (like grasping a rope as a snake) and non-conceptual error (like seeing a double moon). The text's significance lies in systematizing distinctions that other Madhyamaka texts leave implicit.

Paramārtha (परमार्थ, Tibetan: དོན་དམ་པ, don dam pa) — "Ultimate reality" or "the highest truth." One of the two truths (satyadvaya) in Buddhist philosophy: conventional truth (saṃvṛtisatya) and ultimate truth (paramārthasatya). In Nāgārjuna's Madhyamaka, paramārtha is not a hidden reality behind appearances but the emptiness (śūnyatā) of all phenomena — the fact that nothing possesses inherent self-existence. The genius of the two-truths framework is that ultimate truth cannot be spoken directly (it lies beyond the domain of speech) but can be pointed toward through conventional truth. Nāgārjuna's Paramārthastava embodies this paradox: a praise of what cannot be praised, using worldly convention to gesture at what worldly convention cannot reach. Sucaritamiśra's Madhyamārthasaṃgraha (D3857) further divides paramārtha into the enumerated ultimate (where reasoning negates arising) and the non-enumerated ultimate (beyond all elaboration, free from both existence and non-existence).

Tathatā (तथता, Pāli: Tathatā; Chinese: 如 rú, 如如 rúrú) — "Suchness" or "thusness." The nature of reality as it simply is, prior to conceptual overlay. A key term in Mahāyāna Buddhist philosophy, where it denotes the ultimate character of phenomena — empty of self-nature yet undeniably present, neither existent nor non-existent in conventional terms. The Tathāgata (the Buddha) takes his name from this word — he is one who has "thus gone" or "thus come," fully arrived at the nature of Suchness. In Zen, direct encounter with tathatā is the goal of practice: to see the mountain as simply a mountain, the river as simply a river, without the distortions of conceptual grasping. John Wheeler's 1991 soc.religion.eastern post identifies "Suchness" as the convergent destination of both Madhyamaka and Advaita practice.

Tattva (तत्त्व, Tibetan: དེ་ཁོ་ན་ཉིད, de kho na nyid) — "Reality," "thatness," or "the way things actually are." A fundamental term in Indian philosophy denoting the true nature of things as distinct from how they appear. In Madhyamaka, tattva is not a substance or an essence to be discovered — it is the recognition that things lack the very self-nature (svabhāva) that would constitute an essence. The Akutobhayā's Chapter 13 (Examination of Reality, tattvaparīkṣā) systematically dismantles every candidate for tattva: self-nature cannot be found because what has self-nature cannot change, and what lacks self-nature has no basis for alteration. The chapter's celebrated climax (MMK XIII.8) declares: "Emptiness was taught by the Conquerors as the release from all views. But those who hold emptiness as a view were declared incurable." Tattva is thus not a view to be held but the cessation of view-holding itself — the ground that remains when all philosophical positions have been relinquished. Related but distinct from tathatā (suchness): where tathatā names reality as directly experienced, tattva names reality as philosophically analyzed and found to be empty.

Viparyāsa (विपर्यास, Pāli: Vipallāsa; Tibetan: ཕྱིན་ཅི་ལོག, phyin ci log) — "Distortion," "error," or "inversion." The four fundamental misperceptions that perpetuate suffering: seeing permanence in the impermanent (anitya), pleasure in what is suffering (duḥkha), self in the selfless (anātman), and purity in the impure (aśubha). The sutras present these as the cognitive root of the afflictions — desire arises from distorting the unpleasant as pleasant, hatred from distorting the pleasant as unpleasant, and delusion from the confusion underlying both. The Akutobhayā's Chapter 23 (Examination of Distortion, viparyāsaparīkṣā) applies the Madhyamaka analysis to the distortions themselves: since in what is empty of self-nature neither permanence nor impermanence truly exists, even the supposedly "correct" perception (seeing impermanent as impermanent) becomes a form of distortion. The four distortions collapse along with their corrections — and with them, the entire chain from ignorance through formations to suffering.

Vasudhārā (वसुधारा, Tibetan: ནོར་རྒྱུན་མ, nor rgyun ma) — "Stream of Wealth" or "She of the Continuous Flow of Riches." A Buddhist goddess of abundance, prosperity, and flowing rivers, widely venerated across South and East Asian Buddhism. She is the Buddhist counterpart to the Hindu Śrī-Lakṣmī. In her standard iconography she is golden-bodied, seated on a sun-disk atop a treasure vase, holding a precious ear of grain to her heart with her left hand while her right bestows seeds and fruits. The Degé Tengyur preserves a devotional praise by Paṇḍita Jamāri (D3752) in which the poet, after praising her body, speech, and mind, turns to a startling complaint: "If I constantly make offerings to you and praise you with all my devotion, and though my face is drenched in tears you do not lift even a moment of poverty's suffering — what has become of your former compassionate vows?" The plea — acknowledging exhausted karma while begging for even a few drops of compassion — is among the most personally human passages in the Tengyur.

Vanaratna (वनरत्न, Tibetan: ནགས་ཀྱི་རིན་ཆེན, nags kyi rin chen) — "Jewel of the Forest." The last great Indian Buddhist paṇḍita (1384–1468), born in the Chittagong region of eastern India. Vanaratna made three journeys to Tibet and Nepal, where he transmitted tantric initiations and composed devotional works. His importance to the Buddhist-Hindu interface is theological: his Lokeśvararatnamālāstava (D1174, "Precious Garland Praise of the Lord of the World") systematically presents Hindu deities — Maheśvara, Brahmā, Viṣṇu, Sūrya, Candra, Sarasvatī, Vāyu, Varuṇa, Vasudhārā — as emanations from the body of Avalokiteśvara, following the Kāraṇḍavyūha Sūtra theology. Vanaratna also composed a praise of Gaṇeśvara (D1175) and a devotional hymn to his own mahāsiddha ancestor Śabarapāda (D1176). His student Nyimapa of Magadha composed a sevenfold eulogy of the master himself (D1177). Together these four texts form a quartet in the Tengyur's stotra section. Vanaratna's D1174 was translated into Tibetan at the Gobicandra temple in Nepal by the monk Sāgarasena — one of the last Sanskrit-to-Tibetan translations before the tradition ended.

Kāraṇḍavyūha (कारण्डव्यूह, Tibetan: ཟ་མ་ཏོག་བཀོད་པ, za ma tog bkod pa) — "The Basket Display" or "The Array of the Basket." A Mahāyāna sūtra of central importance to the cult of Avalokiteśvara, in which the bodhisattva of compassion is presented as the cosmic source from whom the major Hindu deities emanate: Maheśvara (Śiva) from his brow, Brahmā from his shoulders, Viṣṇu from his heart, Sarasvatī from his teeth, Vāyu from his mouth, the earth goddess from his feet, the sun and moon from his eyes. This emanation theology — which subsumes rather than rejects the Hindu pantheon — became foundational in Nepalese Buddhism and deeply influenced late Indian Buddhist devotional poetry. Vanaratna's Lokeśvararatnamālāstava (D1174) is a verse summary of this theology. The sūtra is also the earliest known source of the mantra oṃ maṇi padme hūṃ, the most widely recited mantra in Tibetan Buddhism.

Vipāka (विपाक, Pāli: Vipāka) — "Ripening" or "fruit." The result or consequence of karmic action — the effects that karma produces, sometimes immediately, sometimes in future lives. While karma refers to the intentional action itself, vipāka refers to what that action eventually produces. The Samyutta Nikāya states the principle plainly: "According to the seed that's sown, so is the fruit reaped from it." Vipāka may be pleasant, unpleasant, or neutral, and need not arise in the same lifetime as the original action. The Theravāda tradition distinguishes types of karma by when their vipāka ripens: in this life, in the immediately following life, or at any point in the subsequent indefinite stream of existences.

Ariya Aṭṭhaṅgika Magga (Pāli; Sanskrit: Āryāṣṭāṅgamārga) — "The Noble Eightfold Path." The Buddha's practical prescription for the ending of suffering: right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, and right concentration. The path is traditionally grouped into three trainings — virtue (sīla: right speech, action, livelihood), concentration (samādhi: right effort, mindfulness, concentration), and wisdom (paññā: right view, intention) — which support and deepen one another. The Eightfold Path is the Fourth Noble Truth, the practical answer to the problem the first three truths diagnose. It appears in the Buddha's first discourse, the Dhammacakkappavattana Sutta, and remains the structural backbone of Theravāda practice.

Brahmavihārā (ब्रह्मविहार, Pāli: Brahmavihāra) — "Divine abodes" or "heavenly dwellings." The four cardinal qualities of a awakened mind: mettā (loving kindness), karuṇā (compassion), muditā (sympathetic joy), and upekkhā (equanimity). The term suggests that a mind suffused with these qualities dwells in a Brahmic or divine mode — open, boundless, non-discriminating. Cultivated systematically through meditation as boundless radiations outward in all directions, the brahmavihārās counteract the four near-enemies that masquerade as them: attachment masquerades as mettā, sorrow as karuṇā, jealousy as muditā, and indifference as upekkhā. The brahmavihārās recur across Buddhist schools and are also found, with different theoretical frameworks, in the Hindu tradition.

Cattāri Ariyasaccāni (Pāli; Sanskrit: Catvāri Āryasatyāni) — "The Four Noble Truths." The foundational diagnosis the Buddha offered in his first discourse: (1) dukkha — life as ordinarily lived is permeated by suffering or unsatisfactoriness; (2) samudaya — the origin of suffering is craving (taṇhā) and clinging; (3) nirodha — suffering can be brought to cessation; (4) magga — the Noble Eightfold Path is the way to that cessation. The Four Noble Truths follow the structure of an ancient Indian medical diagnosis: identify the disease, find its cause, determine that a cure exists, prescribe the cure. They are the organizing framework of the entire Pāli Canon and the starting point of all Buddhist teaching.

Cuti citta (Pāli) — "Death consciousness." In Theravāda Abhidhamma, the final moment of consciousness in a given existence — the last flickering of mind before physical death. It is immediately followed, for beings who have accumulated unexhausted karma, by the arising of paṭisandhi-viññāna (relinking consciousness) in a new existence. Cuti citta does not travel to the new body; like a dying flame kindling another, it provides the condition for, not the substance of, what follows. The Dīgha Nikāya's Mahā Taṇhā-Sankhaya Sutta insists on this: the consciousness does not migrate. Cuti citta is one of nineteen "fixed-function" consciousness-moments in the Abhidhamma's detailed map of the mind.

Kamma (Pāli; Sanskrit: Karma) — "Action" or "deed." The Pāli form of the Sanskrit karma, used throughout the Pāli Canon and the Theravāda tradition. In Buddhist usage, kamma refers specifically to intentional action — physical, verbal, or mental — that produces future effects (vipāka). The Buddha was precise: it is intention (cetanā) that constitutes kamma. Unintentional acts produce no karmic fruit. The Aṅguttara Nikāya states it plainly: "It is intention that I call kamma." Kamma operates without requiring a permanent self to carry it forward — the process is one of conditioned arising, not of a soul accumulating a ledger of deeds.

Majjhimāpaṭipadā (Pāli; Sanskrit: Madhyamā Pratipad) — "The Middle Way." The path the Buddha taught between the extremes of sensual indulgence and extreme asceticism — both of which he had personally tested and rejected before his Enlightenment. At a metaphysical level, the Middle Way also navigates between Eternalism (the belief in an unchanging permanent self) and Annihilationism (the belief that the self is simply extinguished at death). The Noble Eightfold Path is the Middle Way in practice. The term became foundational to the Madhyamaka philosophical school, where it names the refusal to posit either existence or non-existence as the ultimate nature of phenomena.

Mettā (Pāli; Sanskrit: Maitrī) — "Loving kindness" or "benevolence." The first of the four brahmavihārās (divine abodes), and the subject of the Mettā Sutta. Mettā is an unconditional wish for the well-being and happiness of all sentient beings — beginning with oneself, then radiating outward to loved ones, neutral beings, difficult beings, and finally all living things in all directions. It is distinguished from attachment, which is its near-enemy: mettā desires another's happiness without requiring anything in return. The systematic cultivation of mettā in meditation gradually dissolves barriers between self and other, and is considered the direct antidote to ill will.

Muditā (Pāli; Sanskrit: Muditā) — "Sympathetic joy" or "appreciative joy." The third of the four brahmavihārās: the genuine delight in others' well-being and success. Its near-enemy is jealousy — which masquerades as care but contracts when another flourishes. Its far-enemy is aversion. Muditā practice involves actively calling to mind the happiness and prosperity of others and allowing genuine gladness to arise. It is considered one of the more difficult brahmavihārās to cultivate because it requires dissolving the ego's investment in relative standing. In a tradition that takes suffering as its starting point, muditā is Buddhism's insistence that joy is also true, also real, also worth attending to.

Upekkhā (Pāli; Sanskrit: Upekṣā) — "Equanimity." The fourth of the four brahmavihārās: a balanced, non-reactive quality of mind that neither grasps at pleasant experience nor pushes away painful experience. Often misunderstood as detachment or indifference, upekkhā is the most refined of the four divine abodes — the maturation of mettā, karuṇā, and muditā into a stable, open ground. Its near-enemy is indifference (tatramajjhattatā confused with passivity); its far-enemy is grasping. Upekkhā is also the seventh factor of awakening and the quality of mind present at the deepest stages of jhāna (absorption). It does not stand back from the world — it meets the world without being knocked over by it.

Adhimukti (Sanskrit: adhimukti; Pāli: adhimutti) — "Voluntary adhesion" or "pure intentioning." A technical Buddhist psychological term for the mental factor of aspiration or resolution directed toward an intended object — a form of purposive mental orientation. In early Buddhist discourse, the Four Divine Abodes (Brahmaviharas) are understood as exercises in adhimukti: one makes believe, purely in imagination, that one has suffused the entire universe with friendliness or compassion, though no real object is actually reached and nothing happens outside the mind. This is the "objectless intentioning" of the classical framework — complete within consciousness, with no claim on the external world. Tang Huyen, drawing on the Chinese Āgamas and Sanskrit Abhidharma fragments in his 2003 soc.religion.eastern analysis, identified adhimukti as the technical term underlying the classical Brahmavihara practice, distinguishing it from the Mahāyāna reconception in which the practitioner acts in the real world but without any intentioning of self, recipient, or gift (an-ālambana-maitrī).

An-ālambana-maitrī (Sanskrit: an-ālambanamaitrī; "non-intentioning friendliness") — The Mahāyāna reconception of the Brahmaviharas as practice performed in the real world but without a self as actor, a recipient, or a gift — the triple absence of intentional object (tri-maṇḍala-viśuddhi). Where early Buddhist Brahmavihara practice is pure mental adhimukti (intentioning toward an imagined universal object), the Mahāyāna reformulation reverses the structure: the practitioner engages real beings in the real world, but without discriminating the triad that normally organizes action. The concept is documented in the Da zhidu lun (Lamotte, Traité), the Mahāyāna-sūtrālaṃkāra (Lévi edition), and the Bodhisattva-bhūmi: "the bodhisattva cultivates friendliness without discriminating things — that is to be felt as the bodhisattva's friendliness without intentional object." Tang Huyen identified this as the Mahāyāna solution to the problem of reconciling non-mentation (non-dual gnosis) with compassionate action in the world: the acts happen, but without thought of actor, recipient, or what is acted on, ensuring that the friendliness is genuinely friendliness, undistorted by the self's capacity for mistaking selfish motives for altruistic ones.

Tri-maṇḍala-viśuddhi (Sanskrit: trimaṇḍalaviśuddhi; "purity of the triple wheel") — The Mahāyāna criterion for perfectly non-dual action: the complete absence of discrimination with respect to (1) the self as actor, (2) the recipient, and (3) the gift or act. An action performed with tri-maṇḍala-viśuddhi accumulates no karma because there is no "one" who acted, no "one" who received, and no fixed "thing" that was given. The framework appears explicitly in the Diamond Sūtra's teaching on dāna (giving): the bodhisattva gives without apprehending a self that gives, a being that receives, or a dharma that is given. In the context of the Brahmaviharas, tri-maṇḍala-viśuddhi describes the Mahāyāna an-ālambana-maitrī practice: friendliness practiced without actor, recipient, or gift-of-friendliness — the only form of friendliness, as Tang Huyen argued, that cannot be corrupted by self-interest. The concept is closely related to the Prajñāpāramitā's broader teaching that all practices must ultimately be dedicated without apprehending dedication.

Vipassanā (Pāli; Sanskrit: Vipaśyanā) — "Insight." The form of Buddhist meditation that develops direct, experiential insight into the three characteristics of phenomena: impermanence (anicca), suffering or unsatisfactoriness (dukkha), and non-self (anattā). Vipassanā works by sustained, precise observation of physical and mental experience as it arises and passes — often beginning with the breath, then expanding to sensations, thoughts, and emotions. It is distinguished from samatha (calm/concentration) practice, though the two are understood in classical teaching as supporting one another. Vipassanā became well known in the West through Burmese teachers such as Mahāsi Sayadaw and S. N. Goenka, whose secular, systematic presentation in the late 20th century brought it to a global audience.

Vijñaptimātra (विज्ञप्तिमात्र, Tibetan: རྣམ་པར་རིག་པ་ཙམ, rnam par rig pa tsam) — "Consciousness-only" or "mere representation." The central thesis of the Yogācāra school: that external objects do not exist independently of the consciousness that apprehends them — what appears as a world "out there" is in fact the ripening (vipāka) of seeds (bīja) stored in the foundational consciousness (ālayavijñāna). The term does not assert that nothing exists, but that what exists is invariably mediated by consciousness — there is no unmediated access to a "thing" outside the mind. Vasubandhu's Viṃśatikā (Twenty Verses) and Triṃśikā (Thirty Verses) provide the classical formulation. In Nāgārjuna's Kāyatrayāvatāramukha (D3890), vijñaptimātra analysis serves as a stepping-stone: once external objects are dissolved into consciousness, consciousness itself is then dissolved into emptiness — the characteristic Yogācāra-Madhyamaka ascent in which each rung of the philosophical ladder is pulled away after it has been climbed.

Vikalpa (विकल्प; Tibetan: རྣམ་པར་རྟོག་པ, rnam par rtog pa; also rnam rtog) — "Conceptual thought," "conceptual elaboration," or "mental construction." In Buddhist epistemology, the proliferating activity of mind that overlays direct experience with labels, judgments, and categories — the mechanism by which raw perception becomes conceptual interpretation. Nāgārjuna's Cittavajrastava (Tengyur D1121) makes vikalpa the hinge of the entire teaching: "Saṃsāra is mere conceptual elaboration; without elaboration is liberation." The term is central to both Madhyamaka and Yogācāra: in Madhyamaka, vikalpa is what must be abandoned for direct insight into emptiness; in Yogācāra, the three natures (trisvabhāva) distinguish between conceptual construction (parikalpita), dependent arising (paratantra), and the perfected nature (pariniṣpanna) that is free from vikalpa. The Tibetan translation རྣམ་རྟོག (rnam rtog, an abbreviation of རྣམ་པར་རྟོག་པ) is one of the most common philosophical terms in Tibetan Buddhist literature.

Vinaya (विनय, Pāli: Vinaya) — "Discipline" or "training." The monastic code of the Buddhist sangha, constituting the first of the Three Baskets (Tripiṭaka). The Vinaya governs every aspect of the ordained monk's and nun's life: dress, diet, shelter, possessions, comportment, and dispute resolution within the community. It exists in several recensions — the Pāli Vinaya of the Theravāda, the Dharmaguptaka Vinaya used throughout East Asia, and others — which differ in the number of rules they enumerate (the Theravāda prescribes 227 precepts for monks, 311 for nuns). The Vinaya is understood not as legalism but as the framework within which the higher training in meditation and wisdom can flourish.

Śrāmaṇera (श्रामणेर, Pāli: Sāmaṇera) — "One who has striven." A novice Buddhist monk who has taken the ten precepts but has not yet received full ordination as a bhikṣu. The śrāmaṇera lives under the guidance of a teacher-monk, observing a training code that includes celibacy, avoidance of personal adornment, not eating after noon, and abstention from entertainment. The novice's ten precepts are the foundation of all subsequent monastic training; only when the śrāmaṇera is sufficiently grounded in the Vinaya, the sūtras, and meditation does the teacher confer the higher ordination. Together with the bhikṣu, bhikṣuṇī (ordained nun), and upāsaka/upāsikā (lay disciples), the śrāmaṇera completes the fourfold assembly of the Buddha's disciples.

Upavāsa (उपवास, Tibetan: བསྙེན་གནས, bsnyen gnas) — "Fasting observance" or "dwelling near." A one-day vow practice in which a lay Buddhist takes eight precepts for twenty-four hours, from dawn to the following dawn, living in the manner of the noble arhats. The eight precepts include the five lay precepts (no killing, stealing, sexual misconduct, lying, or intoxicants) plus three additional restraints: no eating after noon, no entertainment or personal adornment, and no high seats or beds. The practice allows householders to experience a taste of monastic discipline without permanent ordination. In Nirmalavajra's Trisaṃvarakrama (D3978), the upavāsa vow forms the first of three ascending commitments — one day of restraint, then the lifelong lay vow, then the generation of bodhicitta until Buddhahood.

Gomī (Tibetan: གོ་མི, go mi) — The lifelong observance vow in Buddhist lay practice. Where the standard upavāsa (fasting observance) is taken for a single twenty-four-hour period, the gomī vow extends the same eight precepts for the practitioner's entire life. In Abhayākaragupta's Bodhisattvasaṃvaragṛhṇavidhi (D3970), the gomī is the intermediate commitment between the one-day fasting vow and the full bodhisattva vow — a permanent adoption of near-monastic discipline by a layperson. The practitioner recites "from this time forth and for as long as I shall live" rather than "until tomorrow's sunrise."

Upāsaka / Upāsikā (उपासक / उपासिका, Pāli: Upāsaka / Upāsikā) — "One who sits near." The male and female lay disciples of the Buddha — practitioners who take the Three Refuges and observe the five precepts while living household lives. The relationship between lay disciples and monastics is mutual: lay disciples provide material support (food, robes, shelter) while monastics provide Dharma teaching. In Mahāyāna Buddhism, the bodhisattva ideal transformed the lay path — Vimalakīrti, the paradigmatic lay bodhisattva, famously surpassed the great monastic disciples in his understanding of emptiness. The upāsaka ideal represents Buddhist ethics practiced outside the monastery, embedded in the world.

Nāga (नाग, Pāli: nāga) — A class of powerful serpent beings in Hindu, Buddhist, and Jain cosmology, typically depicted as half-serpent and half-human, crowned with jewels. Nāgas inhabit underground realms and the depths of rivers and oceans, where they guard vast hoards of treasure. Their relationship with humans is ambivalent: nāgas can protect, bring rain, and grant blessings, but can also cause disease, drought, and disaster when provoked or disrespected. In Buddhist cosmology, nāgas are sentient beings subject to karma — greater in power than ordinary humans but not liberated. The name Nāgārjuna comes from the tradition that he received the Prajñāpāramitā teachings from the nāgas in their underwater palace. The Nāga king Mucalinda sheltered the newly awakened Buddha during a rainstorm by spreading his hood above him.

Ngok Lotsāwa Blo ldan shes rab (རྔོག་ལོ་ཙཱ་བ་བློ་ལྡན་ཤེས་རབ, 1059–1109) — "The Translator from Ngok with Intellect and Wisdom." One of the most prolific and influential translators of the Tibetan later diffusion period (phyi dar). A nephew of Ngok Lekpai Sherab, the great student of Atiśa, he was appointed chief editor-translator (zhu chen gyi lo tsā ba) — the highest rank in the Tibetan translation bureaucracy — and worked alongside Indian paṇḍitas including Atulyadāsa to produce definitive Tibetan versions of Indian Buddhist philosophical works. He translated extensively from the Madhyamaka, Pramāṇa, and Abhidharma literature. In the Good Work Library, his work appears in Nirmalavajra's Trisaṃvarakrama (D3978), where he served as chief editor-translator.

Dharmapāla (धर्मपाल) — "Dharma Protector." In Vajrayāna Buddhism, a class of wrathful deities and spirits whose function is to protect the Dharma, the sangha, and individual practitioners from obstacles. Dharmapālas are of two kinds: wisdom protectors (jñāna dharmapāla) — fully enlightened beings or high bodhisattvas in wrathful form, whose intervention follows the logic of compassion — and worldly protectors (loka dharmapāla) — powerful spirits who have vowed to support practitioners but are not themselves liberated. Wrathful figures such as Mahākāla and Palden Lhamo are among the principal jñāna dharmapālas. A related class, field protectors (kṣetrapāla), are associated with specific sacred sites or family lineages. The distinction between wisdom and worldly protectors matters in practice: the first is reliable; the second, operating through karmic affinity, can be unpredictable.

Pārājika (पाराजिक, Pāli: Pārājika) — "Defeat." The most serious class of rules in the Buddhist Vinaya, whose violation results in automatic expulsion from the monastic order. In the Theravāda Vinaya there are four pārājikas for monks: sexual intercourse, theft, murder, and false claims to supernormal attainment. These are "defeats" because the transgressor is defeated in the holy life — unable to continue as a bhikṣu. A monk who violates a pārājika cannot be re-ordained in the same lifetime, regardless of repentance. Mahāyāna texts apply the term also to the "defeats" that break the bodhisattva vow: self-praise combined with disparaging others, withholding the Dharma out of miserliness, harboring anger without forgiveness, and teaching pseudo-Dharma that deceives others.

Saṃvara (Skt. संवर, Tib. སྡོམ་པ, sdom pa) — “Discipline,” “vow,” or “restraint.” The ethical commitment undertaken by a Buddhist practitioner. Three levels of saṃvara are distinguished: the prātimokṣa saṃvara (individual liberation vows of the monastic and lay traditions), the bodhisattva saṃvara (the vow to attain awakening for the benefit of all beings, with its root downfalls and secondary infractions), and the mantra or tantric saṃvara (the commitments of Vajrayāna initiation). The bodhisattva saṃvara, systematized in Asaṅga’s Bodhisattvabhūmi, identifies four root downfalls (pārājika-like defeats) and approximately forty-six secondary infractions. Candragomin’s Bodhisattvasaṃvaraviṃśika (D4081) compresses this system into twenty verses. The term saṃvara carries the double meaning of “that which binds” and “that which protects” — the vow constrains harmful action precisely so that beneficial action can flow freely.

Vaibhāṣika (वैभाषिक; also Sarvāstivāda) — "The Great Particularists." The earliest of the four major Buddhist philosophical schools. The Vaibhāṣika holds that all phenomena — past, present, and future — exist substantially, that the three unconditioned dharmas (space and the two cessations) are permanent, that external objects are directly perceived through sense consciousness, and that irreducible atoms constitute material reality. Their elaborate Abhidharma classifications of dharmas became the foundation against which all later Buddhist philosophy reacted. The Sautrāntika, Yogācāra, and Madhyamaka each successively dismantled elements of the Vaibhāṣika system. Jetāri's Sugatamatavibhaṅgakārikā (D3899) maps the four schools in ascending order, with the Vaibhāṣika as the starting point.

Sautrāntika (सौत्रान्तिक) — "Those Who Follow the Sūtras." The second of the four major Buddhist philosophical schools, which arose in critique of the Vaibhāṣika's elaborate Abhidharma categories. The Sautrāntika rejected several key Vaibhāṣika positions: space is not a real unconditioned entity but "like a barren woman's son" (non-existent); external atoms are inferred rather than directly perceived; mind-dissociated formations (cittaviprayuktasaṃskāra) and imperceptible form (avijñaptirūpa) do not exist; and dharmas do not persist across the three times. By stripping away categories the Vaibhāṣika accepted as real, the Sautrāntika cleared the ground for the Yogācāra's further reduction and ultimately for the Madhyamaka's dissolution of all positions.

Yogācāra (योगाचार; also Vijñānavāda, "consciousness-only doctrine") — One of the two major schools of Mahāyāna Buddhist philosophy, founded in the 4th–5th century CE by the brothers Asaṅga and Vasubandhu. Where Madhyamaka analyses the emptiness of phenomena, Yogācāra analyses the structure of consciousness that produces the appearance of phenomena. Its foundational claim: all experience is a modification of consciousness; the apparent external world is constituted by mental processes, not encountered by them. The school's analysis of the mind became foundational for Tibetan Buddhist psychology and for the Zen tradition's concern with the nature of awareness. Tom Simmonds' 1991 soc.religion.eastern post on the nature of the knower draws on Yogācāra concepts without naming the school.

Ālayavijñāna (आलयविज्ञान, "storehouse consciousness" or "repository consciousness") — The eighth and foundational consciousness in Yogācāra Buddhist psychology, underlying the seven active forms of consciousness (five sensory, one mental, one defiled mental). The ālayavijñāna functions as the repository of karmic seeds — impressions left by past actions that, under appropriate conditions, will ripen into future experience. Unlike a Vedantic ātman, the ālayavijñāna is itself impermanent and dependently arisen — but it provides a relative continuity sufficient to explain the transmission of karma across lives without positing an unchanging self. Tom Simmonds' 1991 colophon notes that his argument about the nature of the knower "anticipates contemporary philosophy of mind debates about the nature of the observer" and connects to Yogācāra's store-consciousness doctrine.

Āsava (Pāli: āsava; Sanskrit: āsrava) — "Cankers," "taints," or "fermentations." The deep defilements that maintain a being's bondage in saṃsāra across lives. The classical enumeration lists three or four: the canker of sensual desire (kāmāsava), the canker of existence (bhavāsava), the canker of views (diṭṭhāsava), and — in some formulations — the canker of ignorance (avijjāsava). Unlike ordinary defilements, which arise and pass in the course of practice, the āsavas are structural — they underlie the entire project of building a self. The arhat (khīṇāsava, "one who has extinguished the cankers") has permanently ended the āsavas; the Buddha's post-awakening declaration announces that his āsavas are exhausted and will not arise again. The Sammādiṭṭhi Sutta of the Majjhima Nikāya identifies full understanding of the āsavas as the mark of right view.

Pīti (Pāli: pīti; Sanskrit: prīti) — "Rapture" or "joy." A meditative quality and one of the seven factors of awakening, arising as concentration deepens in the jhāna states. In the Pāli Canon's psychological cartography, pīti is distinguishable from mere pleasure (sukha): it is the quality of mental uplift or exhilaration that attends significant progress in practice, present in the first three jhānas and then refined away in the fourth. More broadly, the Buddha identifies pīti as one of the positive qualities of liberation in the living body — the joy that arises in the arhat (khīṇāsava) who reflects on the mind freed from desire, hatred, and delusion (SN IV.236). Tang Huyen, in his 2003 analysis of the Three Marks of Existence, argues that pīti names a positive quality of Nirvāṇa — rebutting the common misreading of Buddhism as a merely negative teaching whose only promise is the ending of pain.

Saṅkhāra (Pāli: saṅkhāra; Sanskrit: saṃskāra) — "Formations," "compositions," or "conditioned phenomena." A term with two related but distinct technical meanings. (1) As the fourth of the five aggregates (khandha), saṅkhāra denotes the volitional mental formations — intentions, habits, and dispositions — that constitute and drive experiential life. (2) In the Three Marks of Existence, the term appears in the first two marks: "All the compositions are impermanent" (sabbe saṅkhārā aniccā) and "All the compositions are suffering" (sabbe saṅkhārā dukkhā). Critically, the third mark — "All thing-events are without self" (sabbe dhammā anattā) — uses the broader term dhamma rather than saṅkhāra, indicating a wider scope. Tang Huyen's 2003 analysis of the Three Marks insists on this distinction: the common rendering "all is suffering" misreads the precise Pāli claim, which states that only the conditioned is suffering — Nirvāṇa itself is described across the Āgamas as peaceful, happy, and full of joy.

Taṇhā (Pāli: taṇhā; Sanskrit: tṛṣṇā) — "Craving" or "thirst." The Second Noble Truth identifies taṇhā as the origin of suffering — specifically, craving that perpetuates renewed becoming, accompanied by delight and passion (nandī-rāga-sahagata). The canon distinguishes three cravings: for existence in the pleasure realm (kāma-taṇhā), for continued existence in the form and formless realms (bhava-taṇhā), and for non-existence (vibhava-taṇhā). Taṇhā is not mere desire for pleasant objects — it is the tectonic pull of existence itself toward continuation, self-perpetuation, and becoming. The cessation of taṇhā is the Third Noble Truth — Nirvāṇa — and the Eightfold Path is the Fourth Noble Truth that leads to its abandonment. The Buddha emphasises in multiple canonical sources that even the Noble Truth of the arising of suffering must ultimately be given up; the teachings are a raft, not a destination.

Chandha (Pāli: chanda; Sanskrit: chanda, "wish, intention") — In Buddhist psychology, the wholesome form of wanting — productive aspiration directed toward skillful action, as distinct from taṇhā (craving). Where taṇhā is the thirst that binds — the grasping that perpetuates suffering — chanda is the purposive orientation toward the good: the wanting to practice generosity, to develop virtue, to meditate, to understand the Dharma. One of the five "controlling faculties" (indriya) in Abhidharma formulations, and more broadly a mental factor present in any virtuous intention. Bandula Jayatilaka's 1991 soc.religion.eastern post offered the clearest available contrast: "The motivation to kill a person for wealth is an ego-desire. On the other hand, helping a wounded or dying person cannot be categorized as an ego-desire." The wanting present in the latter is chanda. Without it, the path cannot begin; with it, the path remains free of the ego-drive that would corrupt it. The final stages of deep practice require releasing even chanda — as Jayatilaka wrote, "the hand that held the lamp also needs to be opened."

Saddhā (Pāli: saddhā; Sanskrit: śraddhā) — "Faith," "confidence," or "trust." One of the five controlling faculties (indriya) and five strengths (bala) in Buddhist psychology — but frequently mistranslated and misread as credal belief. It is more accurately a felt resonance with positive qualities of mind: a direct, experiential confidence that arises when one encounters something genuinely good and true. Bandula Jayatilaka's 1991 description captures it exactly: saddhā is "likeness toward positive qualities of mind — a felt resonance with what is good and true, grounded in direct experience rather than belief." The Kālāma Sutta's famous instruction — test teachings by their consequences, not their authority — is thus not a repudiation of saddhā but a clarification of its proper ground: genuine trust is earned by experience, not required by institution. In the Theravāda path-sequence, saddhā is the balance-partner of wisdom (paññā): unchecked by wisdom, it becomes blind devotion; unchecked by saddhā, wisdom becomes cold intellectual performance.

Sati (Pāli: sati; Sanskrit: smṛti, "memory, recollection") — "Mindfulness." Literally related to the root for "remembering" — in practice, the quality of present-moment awareness that neither forgets nor wanders: the practitioner "remembers" to remain awake to what is actually happening, moment by moment. Sati is one of the five controlling faculties (indriya), the seventh factor of the Noble Eightfold Path (Right Mindfulness, sammā sati), and the first of the seven factors of awakening (bojjhaṅga). In Theravāda practice, sati is cultivated through the four foundations of mindfulness (satipaṭṭhāna): the body, feelings, mind-states, and phenomena. Bandula Jayatilaka named mindfulness as one of the seven enlightenment factors that deepen as practice matures — arising alongside analysis of phenomena (dhamma-vicaya), energy, rapture, tranquillity, concentration, and equanimity. The English translation "mindfulness" now carries widespread secular connotations of stress reduction largely absent from the Pāli source; the original term emphasizes not relaxation but the unwavering, clear attention that serves as the foundation for all higher practice.
Samprajanya (Sanskrit: सम्प्रजन्य, samprajanya; Pāli: sampajañña; Tibetan: ཤེས་བཞིན, shes bzhin) — "Clear knowing," "clear comprehension," or "full awareness." A technical Abhidharma term denoting the non-afflicted wisdom by which one engages in the conduct of body, speech, and mind with full awareness. Distinguished from smṛti (mindfulness/recollection): where mindfulness remembers to stay present, samprajanya is the active discriminating awareness that knows what one is doing while doing it. In the Vasubandhu commentary on D4103 verse 6, samprajanya and smṛti together characterize the truly gone-forth renunciant whose complexion is radiant — not from worldly pleasures but from the freedom of non-attachment across all three times. The pair appears throughout Buddhist meditation instructions as complementary faculties: mindfulness holds the object, clear knowing understands the situation.

Pañcaśīla (Sanskrit: पञ्चशील, pañca "five" + śīla "moral precept"; Pāli: Pañcasīla) — "The Five Precepts." The foundational ethical discipline of Buddhism for lay practitioners and the basis of all further practice: (1) refrain from killing living beings; (2) refrain from taking what is not given; (3) refrain from sexual misconduct; (4) refrain from false speech; (5) refrain from intoxicants. The first four are described in the Mahāyāna tradition as natural moral principles binding on all humanity regardless of religious affiliation; the fifth is a conventional principle that prevents conditions leading to transgression of the others. Each precept has a positive counterpart — non-killing is paired with loving-kindness, non-stealing with generosity, right conduct with wholesome family life, non-lying with truthfulness, and non-intoxication with clarity of mind. The Five Precepts correspond in the Chinese tradition to the Five Constant Virtues (wuchang) of Confucianism. Yi L. Chiang, posting to soc.religion.eastern in February 1991, described them as "the moral standard for human beings" and the prerequisite for entering the ocean of the Triple Jewel.

Dāna (Sanskrit: दान; Pāli: dāna) — "Generosity" or "giving." The first of the six perfections (pāramitā) of the bodhisattva path and one of the most fundamental virtues of Buddhist practice. Dāna is distinguished in Mahāyāna teaching into three types: material giving (food, clothing, shelter, money), the giving of fearlessness (protection from harm), and the giving of the Dharma (teaching). The Tri-maṇḍala-viśuddhi teaching of the Diamond Sūtra holds that the most perfect form of dāna is practiced without apprehending a self that gives, a being that receives, or an act of giving — generosity that generates no karma because no "one" is present to accumulate it. In the Four All-Embracing Virtues of the bodhisattva (catuḥ-saṃgraha-vastu), dāna is the first method for drawing beings toward the Dharma.

Śīla (Sanskrit: शील; Pāli: Sīla) — "Moral conduct," "virtue," or "ethical training." One of the three pillars of Buddhist practice — alongside samādhi (concentration) and prajñā (wisdom) — and the second of the six perfections. Śīla encompasses the Five Precepts for laity, the Eight Precepts for intensified lay practice, and the 250 or 348 rules of the monastic Vinaya. In Mahāyāna understanding, śīla is not merely negative prohibition but includes the active cultivation of its positive counterparts — the cessation of evil and the initiation of the good. The Bodhisattva's śīla pāramitā aims at the state of non-retrogression in which moral behavior becomes effortless and automatic, the precepts no longer constraining but simply the natural expression of a purified mind. The Visuddhimagga structures the entire path of Buddhist practice as sīla → samādhi → paññā.

Kṣānti (Sanskrit: क्षान्ति; Pāli: Khanti) — "Patience," "forbearance," or "endurance." The third of the six perfections (pāramitā) of the bodhisattva path. Kṣānti encompasses three kinds of patience: bearing physical hardship and discomfort; bearing the harm and aggression of others without retaliation; and the patient acceptance of profound Dharma teachings that the ordinary mind resists — particularly the teaching of emptiness. The Kṣānti pāramitā is essential because the bodhisattva encounters inevitable opposition in working for the benefit of all beings across countless lifetimes. The Jātaka tales include the story of Kṣāntivādin, a sage dismembered by a king without anger or complaint. The Bodhicaryāvatāra devotes its sixth chapter to kṣānti as the antidote to anger.

Vīrya (Sanskrit: वीर्य; Pāli: Viriya) — "Energy," "effort," or "diligence." The fourth of the six perfections (pāramitā) of the bodhisattva path; also one of the five faculties (indriya) and five powers (bala) of Buddhist practice. Vīrya names sustained, unrelenting effort in the cultivation of wholesome states and the abandonment of unwholesome ones — particularly persistence in the face of disillusionment. In the Eightfold Path, vīrya appears as Right Effort (sammā vāyāma): the effort to prevent unwholesome states from arising, to abandon those that have arisen, to cultivate wholesome states not yet arisen, and to maintain those already present. The Bodhicaryāvatāra's seventh chapter treats vīrya as the armor the bodhisattva wears against discouragement.

Cetanā (Sanskrit: चेतना; Pāli: Cetanā) — "Volition" or "intention." The mental factor that the Buddha identifies as the core of karma: "It is intention that I call kamma," he states in the Aṅguttara Nikāya. Cetanā is not mere wish but the active choosing that sets bodily, verbal, and mental action in motion — the moment of decision that plants the karmic seed. In the Abhidhamma analysis of mind, cetanā is one of seven universal mental factors present in every moment of consciousness, functioning as the organizer that directs all other mental factors toward an object. Karma without cetanā is not karma; unintentional harm produces no karmic fruit. The centrality of cetanā to Buddhist ethics distinguishes Buddhist moral psychology from theories that evaluate acts by consequences alone: the quality of intention, not merely the outcome, determines the karmic valence of an action.

Nāma-rūpa (Sanskrit: नामरूप, nāma "name" + rūpa "form"; Pāli: nāmarūpa) — "Name-and-form." One of the twelve links of dependent origination (pratītyasamutpāda): the psychophysical complex of mind and matter that constitutes what we ordinarily call a person. Rūpa refers to the material, bodily aspect; nāma refers to the mental aspects — feeling, perception, intention, contact, and attention. The compound resists clean translation: "name-and-form" points to the inseparability of the mental and physical dimensions of experience, neither reducible to the other. In the Mahā Nidāna Sutta, the Buddha explains the mutual conditioning of consciousness (viññāna) and nāma-rūpa: each depends on the other — consciousness descends into the womb and conditions the arising of nāma-rūpa; nāma-rūpa in turn conditions the arising and continuation of consciousness. Tang Huyen notes that the Buddha explicitly names "name and form" among the dimensions the awakened mind has surpassed.

Hīnayāna (Sanskrit: हीनयान, hīna "lesser, inferior" + yāna "vehicle"; Chinese: 小乘, Xiǎochéng) — "The Lesser Vehicle." A term coined in Mahāyāna polemic to distinguish the early Buddhist schools — chiefly Theravāda — from the "Great Vehicle" that aspires to universal liberation. In Mahāyāna taxonomy, a practitioner on the Hīnayāna path aims at the personal liberation of an arhat rather than the full Buddhahood of a bodhisattva aimed at saving all beings. The common simile contrasts a solitary cyclist (Hīnayāna) with a full train (Mahāyāna). The Theravāda tradition firmly rejects the label as pejorative and anachronistic; contemporary Buddhist scholarship generally avoids it in favor of "early Buddhism," "Nikāya Buddhism," or the tradition's own name. The Lotus Sutra's teaching of ekayāna ("one vehicle") supersedes the distinction: it holds that all paths are ultimately one, and that Śrāvakas and Pratyekabuddhas alike will eventually attain full Buddhahood.

Śrāvaka (Sanskrit: श्रावक; Pāli: Sāvaka) — "Hearer" or "listener." One who hears the teaching of a Buddha directly and follows the path to arhatship — individual liberation from suffering and the cycle of rebirth. In Mahāyāna taxonomy, the śrāvaka path (following a living Buddha's teaching) is distinguished from the pratyekabuddha path (attaining liberation independently, without a teacher) and from the bodhisattva path (aspiring to full Buddhahood for all beings). In the early Buddhist texts, śrāvaka is an honorific: the Buddha's direct disciples are śrāvakas, and the śrāvakasaṅgha is one of the most sacred refuges. The Lotus Sutra reframes the path as ultimately culminating in Buddhahood, describing earlier teachings on arhatship as skillful means (upāya) appropriate to the capacities of early students.

Mappō (Japanese: 末法; Chinese: Mòfǎ; Sanskrit: saddharma-vipralopa) — "The Latter Day of the Law" or "The Final Dharma Age." A periodization of Buddhist history influential in East Asian Buddhism, dividing the era after the Buddha's death into three declining ages: the Age of the True Dharma (shōbō), in which teaching, practice, and attainment flourish; the Age of the Semblance Dharma (zōhō), in which teaching and practice remain but attainment ceases; and the Latter Day (mappō), in which only the teaching survives in name while practice and attainment have degenerated. Traditions differ on the timing of each age. Nichiren (1222–1282) argued that his era was deep in mappō and that the appropriate practice for this degenerate age was not complex disciplines but the chanting of Nam-myoho-renge-kyo. The concept of mappō shaped the entire landscape of Kamakura-period Japanese Buddhism, providing the urgency behind the new popular schools: Pure Land (Jōdo-shū, Jōdo Shinshū), Zen, and Nichiren.

Upādāna (उपादान, Tibetan: ཉེ་བར་ལེན་པ, nye bar len pa) — "Appropriation," "grasping," or "clinging." In Abhidharma, the eighth link in the twelve-fold chain of dependent origination (pratītyasamutpāda): conditioned by craving (tṛṣṇā), appropriation arises; conditioned by appropriation, becoming (bhava) arises. In the Madhyamaka analysis, upādāna and upādātṛ (the appropriator, ཉེ་བར་ལེན་པ་པོ) form a pair analogous to action and agent: just as the agent depends on the action and the action on the agent, so the appropriator depends on the appropriated and vice versa. The Akutobhayā Chapter 8 concludes by extending the agent-action analysis to the appropriator-appropriated pair and then to "all remaining things" — making the tetralemma a universal analytical template. The term also denotes the five aggregates as "the aggregates of appropriation" (upādāna-skandha) — the clusters of experience to which a being clings.

Upakleśa (Sanskrit: उपक्लेश; Tibetan: ཉེ་བའི་ཉོན་མོངས་པ, nye ba'i nyon mongs pa) — "Secondary afflictions" or "subsidiary defilements." In Abhidharma psychology, the class of mental afflictions that arise dependent upon the root afflictions (mūlakleśa) — such as anger, resentment, spite, jealousy, miserliness, deceit, and others. The Vasubandhu commentary on D4103 verse 6 identifies four types of pleasure arising from secondary afflictions as the worldly cause of radiant complexion: pleasure from association with beloved persons, from laughter and amusement, from sexual conduct, and from eating food at will. The monastic renunciant abandons all four and achieves radiance through a different path — non-attachment across past, present, and future, combined with clear knowing and mindful eating. The term is key to understanding the Abhidharma's distinction between the coarse root afflictions that drive rebirth and the subtler secondary afflictions that color everyday experience.

Upāya (Sanskrit: उपाय; Pāli: upāya; Chinese: 方便, fāngbiàn) — "Skillful means" or "expedient method." The principle that the Buddha's teachings are always means calibrated to the capacities of their hearers, never final ends in themselves. Like a raft used to cross a river, a teaching is to be set aside once it has done its work — attachment to the vehicle is itself a form of suffering. Tang Huyen presses the instrumentalist reading to its limit: even Dependent Arising, even the Five Aggregates, even the doctrine of not-self are upāya — serviceable maps of experience, not the territory. The Lotus Sutra makes upāya the governing hermeneutic: all earlier, apparently contradictory teachings are retrospectively revealed as skillful accommodations to different audiences and stages of development.

Bhavasaṃkrānti (Sanskrit: भवसंक्रान्ति; Tibetan: སྲིད་པ་འཕོ་བ, srid pa 'pho ba) — "Transference of Existence" or "Transition of Becoming." A term denoting the apparent passage of beings through states of existence (bhava) despite the ultimate non-existence of any entity that passes. The compound joins bhava (existence, becoming — the tenth link in the twelve-fold chain of dependent origination) with saṃkrānti (passage, transition, migration). The Madhyamaka text of this name attributed to Nāgārjuna (Tengyur D3840) establishes the paradox in its opening verses: "Because there is no entity, there is no arising. With regard to that non-entity — the taking of birth is existence." The "transference" is thus not the movement of a real entity from one state to another, but the mere conventional designation of arising and passing within what is ultimately empty. The concept underlies the Buddhist analysis of rebirth without a self: continuity without identity, passage without a passenger.

Vandhyāputra (Sanskrit: वन्ध्यापुत्र; Tibetan: མོ་གཤམ་གྱི་བུ, mo gsham gyi bu) — "The Son of a Barren Woman." A stock example in Buddhist and Indian philosophical literature of an entity that is absolutely impossible — not merely non-existent but logically precluded from ever arising. Used alongside the "hare's horn" (śaśaśṛṅga) and the "flower in the sky" (ākāśapuṣpa) to illustrate the Madhyamaka position that real entities (svabhāva) are not merely absent but impossible. The Bhavasaṃkrānti (D3840) deploys the image in its examination of non-arising: "Even for the child of a barren woman — who could bring about her birth? This worldling was never born before." The force of the example is not that barren women happen not to have children, but that the concept of "child of a barren woman" is self-contradictory — and that the concept of "truly arising entity" is equally so.

Bhāvanā (Sanskrit: भावना; Pāli: bhāvanā) — "Cultivation" or "development." The active, deliberate practice of the Buddhist path — meditation, ethical training, and the systematic development of wholesome qualities of mind. Distinguished from mere wishing: SN III.153 / 22.101 (cited by Tang Huyen) states that no amount of aspiration ("Oh, that my mind might be liberated from the cankers!") substitutes for actual cultivation. The Theravāda path organises bhāvanā into two complementary streams: samatha (tranquillity) and vipassanā (insight). In Mahāyāna, bhāvanā expands to include the entire bodhisattva programme of perfections (pāramitā). The Visuddhimagga (Buddhaghosa, 5th century CE) is the definitive Theravāda manual of systematic bhāvanā.

Aśubha-bhāvanā (Sanskrit: अशुभभावना; Tibetan: མི་སྡུག་པའི་བསྒོམ་པ, mi sdug pa'i bsgom pa; Pāli: asubha-bhāvanā) — "Contemplation of the unattractive" or "meditation on the foul." The systematic practice of contemplating the decomposition of corpses to counter attachment to the body. The practitioner visits or visualizes a charnel ground and observes: bodies cast aside, limbs scattered, bones bleached to dove-grey. Vasubandhu's D4103 Verse 18 reads the charnel ground verse as antidote to four specific types of desire — desire for service (the dead are unattended), desire for shape (the body is scattered), desire for touch (only hard bones remain), and desire for color (the complexion has faded). He also reads it as revealing five aspects of impermanence simultaneously: destruction, separation, transformation, proximity, and intrinsic nature. The key turn: these impermanences visible in the dead body are already present in the living one. Canonical sources include Satipaṭṭhāna Sutta (MN 10) and the nine stages of decomposition in the Visuddhimagga.

Dharmarāja (Sanskrit: धर्मराज; Tibetan: ཆོས་རྒྱལ, chos rgyal) — "Dharma-king" or "righteous ruler." A king who governs in accordance with the Dharma — knowing what is proper and what is improper, knowing the consequences of actions. In Buddhist political philosophy, the Dharmarāja is the antidote to the three fears that afflict the world: hostile forces, crop failure, and disease. When the ruler is righteous, householders dwell in equal fellowship with family and attendants, their grain prospers, and their own dharma and work become supreme. The concept is related to but distinct from the cakravartin (wheel-turning monarch) — any king can be a Dharmarāja if he rules justly. Vasubandhu's D4103 Verse 21 places "may a Dharma-king arise" as the structural pivot of the arhat's aspiration: the king's righteous conduct is the antidote to the cause of all three worldly fears.

Parikathā (Sanskrit: परिकथा; Tibetan: གཏམ, gtam) — "Discourse," "narrative," or "exhortation." A genre of short didactic Buddhist poetry found in the miscellany section of the Tengyur, typically presenting ethical teachings in verse form. The Degē Tengyur preserves a series of parikathā texts attributed to Nāgārjuna and Vasubandhu, including the Dānaparikathā (Discourse on Giving, D4161), the Śīlaparikathā (Discourse on Moral Discipline, D4164), the Bhāvasaṃkrāntiparikathā (Discourse on Transcending Existence, D4162), and others. The genre bridges formal philosophical treatise and popular moral instruction — more direct than a śāstra, more structured than a sūtra.

Trāyastriṃśa (Sanskrit: त्रायस्त्रिंश; Pāli: Tāvatiṃsa; Tibetan: སུམ་ཅུ་རཙ་གསུམ, sum cu rtsa gsum) — "The Thirty-Three." The second of the six desire-realm heavens in Buddhist cosmology, located atop Mount Meru. Ruled by Śakra (Indra), it is named for the thirty-three gods who dwell there. The Buddha is said to have spent a rainy season in Trāyastriṃśa teaching the Abhidharma to his mother, Queen Māyā. In the Tengyur ethical literature, rebirth in Trāyastriṃśa is cited as one of the karmic fruits of the perfection of generosity (dāna pāramitā).

Five Aspects of Impermanence (Sanskrit: pañcavidhā anityatā; Tibetan: མི་རྟག་པ་ཉིད་རྣམ་པ་ལྔ, mi rtag pa nyid rnam pa lnga) — Vasubandhu's five-fold analysis of impermanence as revealed in the contemplation of a dead body, from D4103 Verse 18: (1) vināśa-anityatā, the impermanence of destruction — when the vital faculty ceases, the body is cast aside; (2) viyoga-anityatā, the impermanence of separation — the limbs scatter in the directions; (3) anyathātva-anityatā, the impermanence of transformation — the color changes from living flesh to bleached bone; (4) sāmīpya-anityatā, the impermanence of proximate appearance — these three impermanences are already present in the living body right now; (5) dharmatā-anityatā, the impermanence of intrinsic nature — this body has that very nature, therefore "what delight is there?" The fourth and fifth aspects are the distinctive move: Vasubandhu shifts from observing external impermanence to recognizing it as one's own present reality.

Āśraya (Sanskrit: आश्रय; synonyms: niśraya, pratiṣṭhā; Pāli: āssaya) — "Foundation, platform, support, basis." The footing on which consciousness establishes itself. Where Brahmanical philosophy treats the āśraya as cosmologically foundational — earth resting on water, water on wind, wind on space — the Buddhist tradition systematically denigrates the concept: all āśraya is itself unsupported. SN II.66–68 / SA 361 (quoted by Tang Huyen) teaches that when the mind cogitates, composes thoughts, and tends to anything, that thing becomes an ārammaṇa (object) on which consciousness stands; consciousness standing on an object leads to bending, coming and going, birth and death, and the whole mass of suffering. The brahman-Nirvāṇa dialogue quoted by Nāgārjuna ends: "Blowing-out (nirvāṇa) is unsupported" — the final answer to any chain of āśraya inquiry.

A-pratiṣṭhita (Sanskrit: अप्रतिष्ठित; Pāli: a-patiṭṭhita) — "Unsupported, groundless, without a footing." The negative of pratiṣṭhā (support, foundation), used in two related but distinct registers. (1) A-pratiṣṭhita-citta: the "unsupported thought" of the Diamond Sutra — "the bodhisattva ought to give rise to a thought unsupported by form, sound, scent, flavour, tangible, or object-of-mind." Hui-neng, the sixth Chan patriarch, is said to have awakened on hearing this passage. (2) As a predicate of Nirvāṇa itself: "Nirvāṇa is a-pratiṣṭhita" — the final term in any Buddhist chain of grounds dissolves into groundlessness. The Heart Sutra's āśritya ("relying on") is a deliberate punchline against this tradition: the Bodhisattva "relies on" the Perfection of Wisdom — the practice of not relying — in precisely the way Daoist wei wu-wei means "doing the non-doing."

Dharmatā (Sanskrit: धर्मता; Chinese: 法性, fǎxìng) — "The nature of things" or "thusness of phenomena." The inherent, self-existing legality of reality — the pattern of dependent arising — which holds regardless of whether any Buddha arises to discover and teach it. SA 299 (cited by Tang Huyen) quotes the Buddha: "Dependent Arising has not been made by me, has not been made by others. Whether the Tathāgatas were to arise or were not to arise, this nature of things has remained — the dhātu for the standing of things." Dharmatā is thus the discovered, not the invented, order: the Buddha's role is disclosure, not creation. In Mahāyāna usage, dharmatā converges with tathatā (thusness) and dharmādhātu (the space of phenomena), referring to the luminous, open nature of reality beneath conditioned appearances.

Padmakaravarma (Sanskrit: पद्मकरवर्मन्, Tibetan: པད་མ་ཀ་ར་བར་མ, pad ma ka ra bar ma) — An Indian Buddhist paṇḍita who collaborated with the Great Translator Rinchen Zangpo on several works in the Stotra section of the Degé Tengyur. He is credited as the author of the Pañcatathāgatastava (Praise of the Five Tathāgatas, D1164), a devotional praise of the five Dhyāni Buddhas — Vairocana, Akṣobhya, Ratnasambhava, Amitābha, and Amoghasiddhi — each praised in a single verse with their specific throne, color, mudrā, and wisdom. The colophon of D1164 names him as both author and Indian collaborator on the Tibetan translation. Little is known of his life beyond his appearance in Tengyur colophons as a translation partner of Rinchen Zangpo during the Later Diffusion period (10th–11th century).

Rinchen Zangpo (Tibetan: རིན་ཆེན་བཟང་པོ, rin chen bzang po, "Good Jewel"; Sanskrit: Ratnabhadra) — The Great Translator (lo tsā ba chen po), 958–1055 CE. The most celebrated figure of the Later Diffusion (phyi dar) of Buddhism in Tibet, when the dharma was re-established after the collapse of the Tibetan Empire. Ordained at thirteen, he made three journeys to Kashmir to study Sanskrit and tantric traditions, spending a total of seventeen years in India. Upon returning to western Tibet (Guge-Purang), he translated over 150 texts from Sanskrit into Tibetan — including tantras, commentaries, and philosophical works — establishing the standards for Tibetan translation terminology that would be codified in the Mahāvyutpatti. He oversaw the construction of major temples in Tabo, Tholing, and other sites in the western Himalayas. His translation work spans the Tengyur broadly: he collaborated with Indian paṇḍitas including Gaṅgādhara (on Vasubandhu's D4163, Saptaguṇaparivarṇanākathā) and many others, producing renderings of extraordinary precision and literary quality.

Vairocana (वैरोचन; Chinese: 毘盧遮那, Pílúzhēnà; Japanese: Birushana; Tibetan: rNam par snang mdzad) — "The Illuminator" or "He Who Is Like the Sun." The cosmic or primordial Buddha in Mahāyāna and Esoteric Buddhism — the dharmakāya aspect of Buddhahood that pervades all space and time, as distinct from the historical Śākyamuni (who is the nirmāṇakāya, the visible form-body). In the Avataṃsaka Sūtra (Flower Garland Sutra), Vairocana is the ultimate Buddha whose body encompasses the entire cosmos, with all other buddhas and bodhisattvas understood as rays of his luminosity. In Shingon and Tendai esoterism, Vairocana is the central figure of the two great maṇḍalas — the Diamond World and the Womb World. The Ven. Shih Shen Lung (Old Frog), writing to soc.religion.eastern in February 1991, articulated the two valid modes of taking refuge in the Buddha as "either the historical Shakyamuni of India or of the Cosmic Buddha-Nature [Vairocana] flavor — or both." The Trikāya doctrine makes this explicit: Vairocana corresponds to the formless Dharmakāya underlying all buddha manifestations, while Śākyamuni corresponds to the Nirmāṇakāya visible to ordinary beings.

Vasubandhu (Sanskrit: वसुबन्धु; Tibetan: དབྱིག་གཉེན, dbyig gnyen, "Treasure of Wealth") — One of the most important philosophers in the history of Indian Buddhism (c. 4th–5th century CE). Traditionally credited with authorship of foundational texts in both Abhidharma and Yogācāra traditions: the Abhidharmakośa (Treasury of Higher Knowledge), the Vijñaptimātratāsiddhi (Proof of Consciousness-Only), the Triṃśikā (Thirty Verses), and the Viṃśatikā (Twenty Verses), among many others. His Śīlaparikaṭhā (Advice on Ethics, Tengyur D4164), a short verse epistle preserved only in Tibetan, argues that ethical discipline surpasses generosity as the ocean surpasses a hoofprint. His Saptaguṇaparivarṇanākathā (Advice Universally Proclaiming the Seven Good Qualities, D4163) enumerates the seven good qualities of fortunate human birth — long life, health, beauty, good fortune, noble birth, wealth, and wisdom — and their karmic causes, using vivid similes: the condemned prisoner adorned for execution, the eunuch who possesses the finest woman, the bamboo dying from its own fruit. Brother of Asaṅga, who is said to have converted him from the Sarvāstivāda Abhidharma tradition to the Mahāyāna.

Dharma transmission (Chinese: chuánfǎ 傳法; Japanese: denpo) — In the Ch'an and Zen traditions, the formal recognition by a master that a student has genuinely realized the dharma and is authorized to carry the lineage forward as a dharma heir. Distinguished from monastic ordination, dharma transmission certifies not merely clerical status but direct awakening, confirmed through sustained encounter between master and student. It creates an unbroken lineage of mind-to-mind transmission traced back to the Buddha's wordless flower-sermon to Mahākāśyapa at Vulture Peak — the moment when the first dharma heir received the teaching beyond words and scriptures. The practice expresses Ch'an's foundational claim: the essential transmission is "outside the scriptures, not dependent on words and letters." In the Japanese Zen tradition, formal dharma transmission (inka-shōmei) typically requires completion of a kōan curriculum. The Ven. Shih Shen Lung (Ryugen Fisher, also known as "That Old Frog"), whose 1991 teaching on the Three Jewels is preserved in the Good Work Library, is identified by his student Len Moskowitz as "a Ch'an dharma heir" — a practitioner who has received this transmission and is authorized to teach in the lineage.

Nirodha-samāpatti (Pāli/Sanskrit: nirodha-samāpatti) — "Attainment of cessation." The ninth and final meditative attainment in the Theravāda system, reached after the four form meditations (jhāna/dhyāna) and the four formless attainments. In nirodha-samāpatti, all mental activity — including perception and feeling — ceases entirely. Tang Huyen (citing MN 118) identifies this as the point where both calming (samatha) and insight (vipassanā) are accomplished simultaneously: "Here one is concentrating thought (samadahan cittam) and at the same time freeing thought (vimocayam cittam)." Full arhat-ship occurs here if not already attained. The calming of the compositions of mind (citta-saṅkhāra) at nirodha-samāpatti corresponds to the Buddha's definition of Nirvāṇa as the "calming of all compositions" (sabba-saṅkhāra-samatho) and as non-activity, non-doing (an-abhisamskāra).

Catur-sukha (Sanskrit; Pāli: cattāri sukhāni) — "Four joys" or "four kinds of happiness." The four pleasures specific to the awakened: (1) nekkhama-sukha — joy of desirelessness (lit. "happiness of nekkhama," the negative of kāma, desire); (2) paviveka-sukha — joy of aloofness or seclusion; (3) upasama-sukha — joy of calm; (4) sambodha-sukha — joy of awakening. Cited in MA 191, SA 485, MN 66, MN 140, and Harivarman's Tattva-siddhi. Tang Huyen notes that all four operate by the "roundabout" principle — they cannot be aimed at directly but arise as by-products of pursuing something else (mindfulness, the public case, etc.). Nekkhama-sukha is paradigmatically paradoxical: it is the joy that follows from giving up the pursuit of joy.

Titthatu pubbanto titthatu aparanto (Pāli) — "Let the past be, let the future be." A canonical phrase occurring in MN 80 (Vekhanassa Sutta), used by the Buddha to redirect interlocutors away from metaphysical speculation about past lives and future worlds and toward the present. Tang Huyen reads it more actively: "put down the past, put down the future, drop them, leave them alone, don't touch them." The phrase encodes the Buddha's structural teaching that the Buddhist path is unloading — systematically reducing the freight of mental accumulation — and that all views about the "prior limit" (beginning of the world, past lives) and the "posterior limit" (end of the world, future lives) must be cut without remainder at arhat-ship (SA 60, MN 102, DN 1).

Saddharma-puṇḍarīka (Sanskrit: सद्धर्मपुण्डरीक, saddharmapuṇḍarīka; Chinese: 妙法蓮華經, Miào Fǎ Lián Huá Jīng; Japanese: Myōhō Renge Kyō) — "The White Lotus of the True Law" or "The Lotus Sutra." One of the most influential texts in all of Mahāyāna Buddhism, composed in Sanskrit between approximately the 1st century BCE and 2nd century CE and extant in multiple Asian recensions. The sutra's central teaching is ekayāna — the One Vehicle: all previous paths, including the Theravāda path to arhatship and the pratyekabuddha's solitary path, are revealed to be provisional teachings (upāya) provisionally suited to early students, and all beings will ultimately attain full Buddhahood. A second major teaching is the eternal nature of the Tathāgata: the historical Buddha Śākyamuni reveals in Chapter XVI that his apparent birth, enlightenment, and parinirvāṇa were themselves upāya — he has been awakened for immeasurable kalpas and remains present for the benefit of beings. The sutra was enormously formative for East Asian Buddhism, giving rise to the Tiantai, Tendai, and Nichiren schools. The standard English translation from Sanskrit is H. Kern's 1884 rendering in the Sacred Books of the East, Vol. XXI.

Dharmaparyāya (Sanskrit: धर्मपर्याय, dharmaparyāya) — "Teaching of the Law" or "religious discourse." A general term for a canonical Buddhist teaching or text, used throughout Mahāyāna sutras as a self-referential designation. The Saddharma-puṇḍarīka repeatedly refers to itself as "this dharmaparyāya" — the teaching of the law of the Lotus — and promises vast merit to those who uphold, copy, expound, or even hear its name. The term implies that the teaching is a paryāya (a going-around, a "way of taking") of the dharma itself: not a fixed formulation but an approach or turning. In the Lotus Sutra's framework, the highest dharmaparyāya is the revelation of ekayāna — the recognition that all the Buddha's teachings are facets of one truth, spoken in different modes for different capacities.

Prabhūtaratna (Sanskrit: प्रभूतरत्न, prabhūtaratna, "abundant treasure"; Chinese: 多寶如來, Duōbǎo Rúlái; Japanese: Tahō Nyorai) — The ancient Tathāgata whose sealed stūpa rises from beneath the earth in Chapter XI of the Saddharma-puṇḍarīka. Prabhūtaratna is a Buddha of a remote past age who, before entering parinirvāṇa, made a vow to manifest wherever the Lotus Sutra was preached, so that he might bear witness to its truth. His jewel-stūpa descends from the sky and settles in space; when Śākyamuni opens it, Prabhūtaratna is revealed seated within, perfectly preserved, and he offers Śākyamuni half his seat. The two Buddhas then sit together, presiding over the great assembly. This image — two Tathāgatas enthroned together in space — became one of the most iconic representations in East Asian Buddhist art and is understood as visual proof that past Buddhas and the present Buddha are one in their affirmation of the Lotus Dharma.

Bhaiṣajyarāja (Sanskrit: भैषज्यराज, bhaiṣajyarāja, "King of Medicine"; Chinese: 藥王菩薩, Yaowang Pusa; Japanese: Yakuō Bosatsu) — The Medicine King Bodhisattva, protagonist of Chapter XXII of the Saddharma-puṇḍarīka. In the sutra, the Medicine King is identified with a former bodhisattva named Sarvasattvapriyadarśana ("Beloved of All Beings") who, in a previous age, burned his own body as an offering to the Buddha Candrasūryavimalaprabhāsaśrī — a supreme act of self-sacrifice demonstrating that the Dharma surpasses all bodily attachment. The chapter's teaching, delivered by the Bodhisattva Nakṣatrarājasaṃkusumitābhijña, offers the Lotus Sutra as the supreme medicine for all beings. Bhaiṣajyarāja became an important figure in East Asian Buddhist healing traditions.

Samantabhadra (Sanskrit: समन्तभद्र, samantabhadra, "Universal Goodness" or "Universal Virtue"; Chinese: 普賢菩薩, Puxian Pusa; Japanese: Fugen Bosatsu; Tibetan: Kun tu bzang po) — The bodhisattva of universal benevolence and practice, protagonist of Chapter XXVI (the epilogue chapter) of the Saddharma-puṇḍarīka. Samantabhadra arrives from the East on a six-tusked white elephant, accompanied by a vast retinue, and vows to protect and uphold all who study and recite the Lotus Sutra in the degenerate age after the Buddha's parinirvāṇa. He is understood as the embodiment of the bodhisattva's active vows — where Mañjuśrī represents wisdom and Avalokiteśvara represents compassion, Samantabhadra represents the inexhaustible practice of those qualities in action. In the Avataṃsaka Sūtra's final chapter, the ten great vows of Samantabhadra serve as the summation of the entire bodhisattva path. In East Asian iconography he is typically paired with Mañjuśrī flanking Śākyamuni or Vairocana.

Padārtha (पदार्थ, Tibetan: ཚིག་གི་དོན, tshig gi don) — "Category" or "meaning of a word." In the Nyāya school of Indian philosophy, the sixteen padārthas constitute the complete framework of epistemology and debate: (1) pramāṇa (means of valid cognition), (2) prameya (object of cognition), (3) saṃśaya (doubt), (4) prayojana (purpose), (5) dṛṣṭānta (example), (6) siddhānta (established conclusion), (7) avayava (members of a syllogism), (8) tarka (hypothetical reasoning), (9) nirṇaya (ascertainment), (10) vāda (debate), (11) jalpa (disputation), (12) vitaṇḍā (destructive argument), (13) hetvābhāsa (pseudo-reason), (14) chala (quibble), (15) jāti (futile reply), (16) nigrahasthāna (point of defeat). The Nyāya holds these sixteen categories as the exhaustive map of rational inquiry. Nāgārjuna's Vaidalyaprakaraṇa (D3826) systematically dismantles all sixteen, and an anonymous Prāsaṅgika commentary (D3904) demonstrates that even the three types of logical evidence underlying these categories are unestablished.

Prāsaṅgika (प्रासङ्गिक, Tibetan: ཐལ་འགྱུར་པ, thal 'gyur pa) — "Consequentialist." The branch of Madhyamaka philosophy that relies exclusively on prasaṅga (reductio ad absurdum) to refute opponents' positions, without advancing any thesis of its own. The Prāsaṅgikas, who call themselves "Great Mādhyamikas" (དབུ་མ་ཆེན་པོ་པ, dbu ma chen po pa), hold that the ultimate truth is reached not by positive determination but by the complete cessation of all conceptual elaboration (prapañca). When nothing is positively established, reality ceases to be an object of mind and speech — and this is designated "ultimate" (paramārtha). The name derives from their distinctive method: rather than prove a counter-thesis, they draw out the absurd consequences (prasaṅga) already latent in the opponent's own position. The Prāsaṅgika school is most associated with Buddhapālita (5th c.) and Candrakīrti (7th c.), though the method is already present in Nāgārjuna's own works.

Vaidalya (वैदल्य, Tibetan: ཞིབ་མོ་རྣམ་པར་འཐག་པ, zhib mo rnam par 'thag pa) — "Subtle pulverization" or "finely woven demolition." A Madhyamaka dialectical technique in which an opponent's epistemological categories are dismantled from within — not by asserting a counter-position, but by showing that each category contradicts itself when examined rigorously. The term names Nāgārjuna's Vaidalyasūtra (D3826) and its companion commentary Vaidalyaprakaraṇa, which together dismantle the sixteen categories (padārtha) of the Nyāya school's logic — from means of valid cognition (pramāṇa) through points of defeat (nigraha-sthāna). The method is prasaṅga (reductio ad absurdum): "A lamp does not illuminate its own nature, because there is no darkness in it. Because the absurd consequence would follow that darkness would also obscure its own nature." The Sanskrit original is lost; the Tibetan translation was made by the Kashmiri paṇḍita Ananta and the translator-monk Drakjor Sherab.

Vigrahavyāvartanī (विग्रहव्यावर्तनी, Tibetan: རྩོད་པ་བཟློག་པ, rtsod pa bzlog pa) — "Turning Back Disputes" or "Refutation of Objections." One of Nāgārjuna's Five Collections of Reasoning (Yuktikāya), preserved in the Degé Tengyur as Tohoku 3828. In seventy verses, an opponent poses twenty objections to the Madhyamaka doctrine of emptiness — if all things lack intrinsic nature, then Nāgārjuna's own words lack intrinsic nature and cannot refute anything; if his words do have intrinsic nature, his thesis is undermined. Nāgārjuna replies with fifty verses demonstrating that the objections are self-defeating: the Mādhyamika holds no thesis (pratijñā) of their own (verse 29: "If I had any thesis, then I would have that fault; but since I have no thesis, I am without fault alone"), and the realist's appeal to means of knowledge (pramāṇa) leads to infinite regress or circular dependence (the father-son analogy, vv. 50–51). The crown verse (70): "For whom emptiness is possible, for them all things are possible; for whom emptiness is not possible, for them nothing is possible." The Sanskrit original was recovered by Rahula Sankrityayana from Tibetan monastery libraries in the 1930s. The Tibetan translation was made by the paṇḍita Jñānagarbha and the translator Ka ba dpal brtsegs, later revised by Jayānanda and Khu mdo sde dpal.

Yuktikāya (युक्तिकाय, Tibetan: རིགས་ཚོགས, rigs tshogs) — "The Collection of Reasoning" or "The Five Collections of Reasoning." The five most important independent philosophical works of Nāgārjuna after the Mūlamadhyamakakārikā, forming the systematic core of the Madhyamaka school's dialectical method. The five are: (1) the Yuktiṣaṣṭikā ("Sixty Verses on Reasoning," D3825), which examines dependent arising and emptiness through sixty stanzas of dialectical argument; (2) the Śūnyatāsaptati ("Seventy Verses on Emptiness," D3827), which demonstrates the emptiness of all phenomena through seventy arguments; (3) the Vigrahavyāvartanī ("The Dispeller of Disputes," D3828), which refutes the charge that the Mādhyamika's own statements are self-undermining; (4) the Vaidalyaprakaraṇa ("The Finely Woven," D3826), which systematically dismantles the Nyāya school's sixteen categories of logic; and (5) the Vyavahārasiddhi ("Proof of Convention"), which establishes that conventional reality functions precisely because of emptiness. The first four are preserved in the Degé Tengyur; the fifth survives only in references. Together with the Mūlamadhyamakakārikā and the Vigrahavyāvartanī's autocommentary, the Yuktikāya constitutes Nāgārjuna's complete philosophical system — the logical skeleton of the Middle Way.

Yuktiṣaṣṭikā (युक्तिषष्टिका, Tibetan: རིགས་པ་དྲུག་ཅུ་པ, rigs pa drug cu pa) — "Sixty Verses on Reasoning." One of Nāgārjuna's Five Collections of Reasoning (Yuktikāya), preserved in the Degé Tengyur as Tohoku 3825. In sixty stanzas of seven-syllable Tibetan verse (plus a homage and dedication), the text examines the nature of dependent arising, the emptiness of all phenomena, and the cessation of conceptual elaboration. The central argument: whatever arises dependently has no self-nature, and what has no self-nature cannot be said to exist or not-exist — it is "like the flame of a lamp" or "like the water in a mirage." The text opens with homage to the Buddha who taught dependent arising as neither arising nor ceasing, and proceeds through a systematic examination of existence, non-existence, causation, the aggregates, and liberation. The Yuktiṣaṣṭikā is notable for its poetic compression — each verse is a complete philosophical argument in four lines — and for its insistence that emptiness is not a position but the abandonment of all positions: "Those who do not take a stand on existence, non-existence, both, or neither — even over a long time, the logicians cannot refute them." The Sanskrit original is lost; the Tibetan translation was made by the Indian paṇḍita Jāyānanda and the Tibetan translator Pa tshab Nyi ma grags.

Saṃskṛta (संस्कृत; Tibetan: འདུས་བྱས, 'dus byas) — "Conditioned" or "compounded." All phenomena that arise through causes and conditions and are subject to change. In Abhidharma, the conditioned is defined by three characteristics: arising (utpāda), abiding (sthiti), and perishing (bhaṅga). Nāgārjuna's Mūlamadhyamakakārikā Chapter 7 and the Akutobhayā commentary systematically dismantle the coherence of these three marks, arguing that if the marks are themselves conditioned they require further marks (infinite regress), and if unconditioned they cannot characterize the conditioned. The counterpart is asaṃskṛta (unconditioned), exemplified by nirvāṇa — but the chapter's final move shows that if the conditioned is not established, the unconditioned cannot be established either.

Utpāda (उत्पाद; Tibetan: སྐྱེ་བ, skye ba) — "Arising" or "production." One of the three marks of conditioned existence in Buddhist Abhidharma. The question of what it means for something to arise — and whether the arising itself arises — is the central concern of MMK Chapter 7 and the Akutobhayā's commentary. The opponent's solution (mutual production between primary arising and arising-of-arising) is refuted through circularity arguments and the famous lamp analogy: a lamp does not illuminate darkness, because there is no darkness where the lamp is.

Jāti-jāti (जातिजाति; Tibetan: སྐྱེ་བའི་སྐྱེ་བ, skye ba'i skye ba) — "Arising-of-arising" or "production-of-production." A sub-characteristic introduced by the Abhidharma opponent in MMK Chapter 7 to avoid infinite regress. The problem: if arising (utpāda) is conditioned, it requires its own arising, abiding, and ceasing — each of which requires further characteristics, ad infinitum. The opponent's solution: primary arising (mahā-jāti) gives rise to arising-of-arising (jāti-jāti), which in turn gives rise to primary arising, breaking the regress through mutual production — like two servants lifting each other. Buddhapālita dismantles this in two stages. First, circularity: if arising-of-arising is not yet produced by primary arising, it cannot produce primary arising. Second, the lamp analogy: a lamp does not illuminate itself, because there is no darkness where a lamp is — just so, an arising that has not yet arisen cannot produce itself. The jāti-jāti system is the opponent's most sophisticated escape from the regress of characteristics, and its failure is the hinge of Chapter 7.

Ūrṇā (उर्णा; Tibetan: མྫོད་སྤུ, mdzod spu) — The white curl of hair between the Buddha’s eyebrows, one of the thirty-two major marks (mahāpuruṣa-lakṣaṇa) of a fully enlightened being. When straightened, the ūrṇā extends to the length of a fathom; when released, it coils clockwise. In Mātṛceṭa’s Samyaksaṃbuddhalakṣaṇastotra (D1140), the ūrṇā “surpasses snow, silver, water-lilies, lotus roots, pearls, and moonlight” — a cascade of white things, each more luminous than the last. In Buddhist iconography, the ūrṇā is often depicted as a jewel or dot on the forehead of Buddha images, and is associated with the emission of light that illuminates all worlds.

Uṣṇīṣa (उष्णीष; Tibetan: གཚུགས་ཏོར, gtsug tor) — The cranial protuberance on the crown of the Buddha’s head, one of the thirty-two major marks. The uṣṇīṣa is invisible to all beings — no matter how high one ascends, the crown of the Buddha’s head cannot be seen. This is the physical mark that most directly signifies transcendence: the head that no power can surpass. In Mātṛceṭa’s D1140, even the great lords bow their crowns before the one who wears the uṣṇīṣa. The term also gives its name to a class of dhāraṇī mantras (uṣṇīṣa-vijaya-dhāraṇī) associated with long life and purification.

Gandharva-nagara (गन्धर्वनगर; Tibetan: དྲི་ཟའི་གྲོང་ཁྱེར, dri za'i grong khyer) — "City of gandharvas." A mirage city, sometimes translated as "castle in the air." In Indian and Buddhist philosophy, the gandharva city is the paradigmatic example of something that appears real but has no substance — it can be perceived but not entered, described but not inhabited. The Akutobhayā's closing image in Chapter 7: arising, abiding, and perishing are like a dream, an illusion, and a city of gandharvas — apparent but empty of self-nature.

Vṛtti (वृत्ति; Tibetan: འགྲེལ་པ, 'grel pa) — "Commentary" or "explanatory text." A standard genre in Indian philosophical literature where an author — often the author of the root verses themselves — provides a prose explanation of a terse verse text (kārikā). An auto-commentary (svavṛtti) is a vṛtti written by the same author who composed the root verses. Dharmakīrti's Sambandhaparīkṣāvṛtti (D4215) is an auto-commentary on his own Sambandhaparīkṣā (D4214), expanding the compressed verse arguments into detailed philosophical prose that addresses objections, provides examples, and reveals the full dialectical structure. The vṛtti tradition reflects the Indian practice of composing root texts in memorizable verse and then unpacking them in prose — the verse is the blade, the commentary is the whetstone.

Subhāṣita (सुभाषित; Tibetan: ལེགས་པར་བཤད་པ, legs par bshad pa) — "Well-spoken" or "beautifully said." A genre of Indian wisdom literature consisting of anthology-style collections of short, pithy verses on ethics, conduct, and the human condition. Where nītishāstra organizes its teachings into chapters with thematic structure, subhāṣita is the art of the single verse — polished, memorable, self-contained. The genre ranges from the secular Subhāṣitaratnakoṣa of Vidyākara to the explicitly Buddhist collections preserved in the Tengyur. Ravigupta's Gāthākoṣa ("Treasury of Verses," D4331) and Vararuci's Śatagāthā ("The Hundred Verses," D4332) are a matched pair of subhāṣita anthologies preserved in the Miscellaneous section of the Degé Tengyur — both open with homage to the Three Jewels, both close with meditation on death, and between those two gestures both catalogue the qualities of the wise and the foolish with unsentimental clarity. The genre's strength is portability: a single subhāṣita verse can survive the loss of its anthology, traveling through oral tradition into other collections, just as the "straight tree / crooked tree" proverb appears in both Cāṇakya's and Masūrakṣa's nītishāstra works.

Sukhāvatī (सुखावती; Tibetan: བདེ་བ་ཅན, bde ba can) — "The Land of Bliss." The western Pure Land presided over by Amitābha Buddha, described in the Sukhāvatīvyūha sūtras as a realm purified of all suffering where beings are reborn through faith, merit, and the power of Amitābha's vows. Unlike heavenly realms in standard Buddhist cosmology, Sukhāvatī is not a reward for good karma but a practice environment — beings reborn there hear the Dharma directly from Amitābha and progress swiftly toward irreversible awakening. The Pure Land tradition became the most widespread form of Buddhism in East Asia, with the nianfo/nembutsu practice of invoking Amitābha's name the most practiced Buddhist devotion in human history. In Candragomin's Deśanā-stava (Praise of Confession, D1159), the poem's final aspiration is: "May all beings go to Sukhāvatī!" — turning the entire systematic confession of spiritual impossibility into a Pure Land prayer, entrusting to Amitābha's compassion what the practitioner's own effort cannot achieve.

Vajrayāna & Tibetan Buddhist Terms

Vajra (वज्र; Tibetan: རྡོ་རྗེ, rdo rje) — "Diamond" or "thunderbolt." An object and concept of central importance in Mahāyāna and Vajrayāna Buddhism, symbolizing that which is indestructible, indivisible, and irresistible — qualities attributed to enlightened wisdom. The word derives from the weapon of Indra in Vedic mythology. In Buddhist usage, vajra denotes the adamantine nature of reality when seen clearly: emptiness that cannot be broken, awareness that cannot be shattered. Nāgārjuna's Cittavajrastava (Praise of the Vajra of Mind, Tengyur D1121) applies the term to mind itself — sems kyi rdo rje, the diamond-thunderbolt of mind — teaching that mind is both the source of bondage and the indestructible ground of liberation. In Vajrayāna ritual, the vajra is a physical implement held in the right hand, paired with the bell (ghaṇṭā) in the left, representing the union of skillful means and wisdom.

Vajrayāna (वज्रयान) — "The Diamond Vehicle" or "The Thunderbolt Vehicle." The tantric current of Buddhism that developed primarily in India from the 5th–7th centuries CE and became the dominant form of Buddhism in Tibet, Nepal, Bhutan, and Mongolia. Where Theravāda emphasises ethical conduct and gradual meditation, and Mahāyāna adds the bodhisattva ideal and the philosophy of emptiness, Vajrayāna adds a toolkit of ritual, visualization, mantra, and energy practices said to accelerate the path to enlightenment. The "diamond" symbolizes indestructible wisdom that cuts through all obscurations. Vajrayāna is distinguished by the transmission of initiations, the centrality of the teacher-student bond (samaya), and the use of visualized deities not as external gods but as projections of enlightened qualities already present in the practitioner's mind.

Samaya (समय; Tibetan: dam tshig) — "Commitment" or "sacred vow." In Vajrayāna Buddhism, the spiritual bond between practitioner and teacher, and between practitioner and the teachings they have received. Samaya is established through initiation ceremonies and binds the practitioner to specific forms of practice, conduct, and attitude toward the teacher. Breaking samaya is considered a serious obstacle to progress. However, samaya is ultimately a promise to oneself and one's own awakening — not a tool of control — and can be broken by the teacher as much as the student, as when a teacher sexually or financially abuses those in their care.

Akaniṣṭha (अकनिष्ठ; Tibetan: འོག་མིན, 'og min) — "The Unsurpassed." The highest of the seventeen heavens in the Buddhist form realm (rūpadhātu), beyond which there is no higher material existence. In Mahāyāna cosmology, Akaniṣṭha is where a bodhisattva on the tenth bhūmi attains final awakening and becomes a fully awakened buddha. Vajrayāna traditions identify Akaniṣṭha with the dharmadhātu itself — not a physical location but the pure realm of reality where awakening occurs. In Atiśa's liturgical texts (D3976, D3966), practitioners visualize Vairocana or other buddhas residing in Akaniṣṭha as the source of consecration and blessing.

Atiśa Dīpaṃkaraśrījñāna (དཔལ་མར་མེ་མཛད་ཡེ་ཤེས) — Indian Buddhist master (982–1054 CE) who initiated the "later dissemination" (phyi dar) of Buddhism in Tibet. Born to a royal family in Bengal, he studied at Vikramaśīla and under 157 teachers, including Dharmakīrti of Suvarṇadvīpa in Sumatra. Traveled to Tibet in 1042 CE at the invitation of the King of Guge and spent his remaining twelve years there. His influence was foundational to the Kadam school, ancestor of the Gelug tradition. His principal works include the Bodhipathapradīpa ("Lamp for the Path to Enlightenment," D3947) and the Satyadvayāvatāra ("Entering into the Two Truths," D3902), which presents the Prāsaṅgika-Madhyamaka view of the two truths in the lineage of Nāgārjuna and Candrakīrti. His Praise of the Vajra-Desire Commitment of Noble Gaṇapati (D3739) reveals the tantric side of Atiśa's practice — a vivid devotional praise to the Buddhist form of the elephant-headed deity, with a rare three-faced iconographic description.

Mo (Tibetan: མོ, mo) — Tibetan divination. A widespread practice in Tibetan Buddhism and Bon religion involving the casting of lots, consultation of dice, rosary counting, or reading of signs to determine auspicious courses of action. The oldest surviving example is Pelliot tibétain 351, a Buddhist divination scroll recovered from Dunhuang Cave 17 (9th–10th century CE), which presents nineteen lots assigned to refuge deities from across the Silk Road world — Śiva, Brahmā, Viṣṇu, Vairocana, Vajrapāṇi, Tārā, Prajñāpāramitā, and, uniquely, Jesus Messiah (lha'i shi myi shi ha), whose entry reflects the presence of the Church of the East at Dunhuang. A separate coin-based divination system is preserved in Pelliot tibétain 1055, also from Dunhuang Cave 17 — the diviner casts twelve coins and reads the resulting count against a systematic table of prognostications. This system shows strong Chinese influence, with the sign of "Confucius" (kong tse, 孔子) appearing as the most auspicious omen and the "Ghost King" (ki wang, possibly 鬼王) as the most inauspicious. A third system, preserved in Pelliot tibétain 1046, is a dice-based Mo text from the pre-Buddhist Bon tradition — eleven oracle entries, each preceded by dice throw markers and concluded with a verdict: mo ngan (bad), mo 'bring (middling), mo bzang (good), or mo bzang rab (excellent). The oracles speak in the voices of named deities — the Life-God (srog lha), the Worthy God (lha ryung ba), and the mountain god Yarlha Shampo — without any Buddhist framework. This represents the oldest attested form of Mo divination in the Bon tradition: no lama intermediary, just the gods speaking through the fall of the dice. Mo practice persists today through the Manjushri dice system and through consultations with lamas. The questioner does not ask the future but asks which deity has come as their refuge — the divination reveals not fate but relationship.

Mo shing (Tibetan: མོ་ཤིང, mo shing) — "Divination sticks." The physical casting instrument of Old Tibetan divination, predating the dice systems of the classical Buddhist period. The diviner casts the sticks and reads the resulting combination — each named pattern (skang par, pung par, skyer par, tsol ryags, sni chi, wing kug, pya bun, ling ryags, li byin, rdud ryags, rmud ryags) carries a distinct omen. Pelliot tibétain 1047, the longest surviving Tibetan Empire divination text, is a complete manual for reading the fall of mo shing across every domain of life: royal succession, warfare, livestock, illness, and the prospects of women. The text assigns different divination sections to different social stations — the skang par section belongs to kings and great ministers, while the sbe slod section addresses commoners and women. A double fall intensifies the reading; combinations of named patterns interact to modify the omen. The system is pre-Buddhist in vocabulary and cosmology, invoking phyva deities, mu sman goddesses, and btsan spirits rather than Buddhist refuge figures.

Phyva (Tibetan: ཕྱ་བ, phyva; also phy(w) a) — "Fate-deity" or "divination deity." A class of Old Tibetan divine being associated with fortune, destiny, and the oracular arts, predating Buddhist influence in Tibet. In the Dunhuang divination scrolls, phyva are the celestial arbiters who determine the outcome of the casting — they deliberate, they are pleased or displeased, they confer or withhold prosperity. In Pelliot tibétain 1047, the phyva deity appears alongside the mu sman and other pre-Buddhist figures as the divine source of the oracle's authority. The word survives in the classical Tibetan expression phyva g.yang ("fortune and prosperity") but lost its theological specificity as Buddhist cosmology replaced the earlier religion's divine categories.

Mu sman (Tibetan: མུ་སྨན, mu sman) — "Celestial goddess" or "heavenly lady." A class of Old Tibetan female divinity associated with the sky realm, fertility, and cosmic restoration. In Pelliot tibétain 1047, the Nine Mu Sman sisters descend from the sky to revive a dead diviner, restore him and his wife to youth, and send down springs of yogurt and beer from heaven — a creation myth that serves as the charter of the oracle itself. The mu sman operate as the divine female counterpart to the phyva deities: where phyva arbitrate fate through the casting, the mu sman restore, heal, and nourish. The "queen of the royal mu sman" (mu sman rgyal mo) appears in the royal divination sections, deliberating alongside Li sa rya on the fate of the king's political power.

Btsan-po (Tibetan: བཙན་པོ, btsan po) — "The Mighty One" or "Emperor." The title of the Tibetan sovereign during the Imperial period (7th–9th centuries CE). The btsan-po ruled from the Yarlung dynasty's seat in central Tibet and held sovereignty over "men, gods, and demons" — a triple dominion reflected in the earliest royal genealogies. In Pelliot tibétain 1038, the origin of the btsan-po's lineage is presented as three competing traditions: celestial descent from the supreme Phyva deity, lineage from the flesh-eating outcast/yaksha ancestor, and descent through thirteen levels of the sky. The scribe concludes with remarkable agnosticism: "whatever the truth may be, it is not manifest." The dynasty is called Spu-rgyal ("Hair-King"). The word btsan means "mighty" or "powerful" and also designates a class of wrathful territorial spirits.

Ma-sangs (Tibetan: མ་སངས, ma sangs) — A class of powerful pre-Buddhist Tibetan deities associated with mountains and the natural world. In Pelliot tibétain 1038, the supreme Phyva deity from whom the btsan-po descends is described as "master of all the Ma-sangs" (ma sangs thams cad gi bdag po), placing the Ma-sangs as subordinate to the celestial sovereign. The Ma-sangs later merged with the Buddhist protective deity system but retained their association with specific territorial locations and mountain passes. The exact etymology is uncertain; some scholars connect ma sangs to a class of partially awakened beings ("not yet fully awakened").

Spu-rgyal (Tibetan: སྤུ་རྒྱལ, spu rgyal) — "Hair-King" or "Hair-Royal." The dynastic name of the Tibetan imperial line as recorded in the earliest Old Tibetan documents. In Pelliot tibétain 1038, the lineage is called both Spu-bod and Spu-rgyal — a dual naming that may reflect different regional or traditional designations for the same royal house. The spu ("hair") element has been variously interpreted: as a reference to physical characteristics, a totemic association, or a clan marker predating the imperial unification. The Spu-rgyal dynasty is associated with the Bon religious tradition in the earliest genealogical chronicles.

Btsan (Tibetan: བཙན, btsan) — "Territorial spirit" or "fierce lord." A class of wrathful Old Tibetan spirit associated with specific geographical locations, particularly mountains, valleys, and fortified sites. Btsan are red in colour and ride red horses in later Tibetan iconography. In the pre-Buddhist religion attested at Dunhuang, btsan spirits appear as potentially hostile forces that can be summoned by a displeased soul-deity (bla) — Pelliot tibétain 1047 warns that when the great soul-deity is displeased, ya bdud (sky-demons) and btsan dri (territorial spirits) and pestilence-spirits are summoned. After the Buddhist period, btsan were incorporated into the Tibetan protective deity system as oath-bound worldly spirits ('jig rten pa'i srung ma). The word btsan also means "mighty" or "powerful" and forms part of the title btsan po ("emperor"), used for the Tibetan imperial rulers.

Ya bdud (Tibetan: ཡ་བདུད, ya bdud) — "Sky-demon." A class of Old Tibetan malevolent spirit inhabiting the upper atmospheric realm. In the pre-Buddhist cosmology of the Dunhuang texts, the ya bdud represent a category of demonic being distinct from the terrestrial btsan spirits and the subterranean klu (nāgas). In Pelliot tibétain 1047, ya bdud appear when the great soul-deity is displeased — they are summoned alongside btsan, pestilence-spirits, and death-spirits as agents of misfortune. The term combines ya ("above" or "sky") with bdud (which later Tibetan Buddhism maps onto Māra, the Buddhist tempter-demon), suggesting that the bdud classification was in place before its Buddhist reinterpretation.

Rgyal phran (རྒྱལ་ཕྲན, Old Tibetan: rgyal pran) — "Principality" or "petty kingdom." The pre-imperial Tibetan political unit: a small autonomous polity centred on a single fort, governed by a lord (rje) and administered by two ministers (blon po). Pelliot tibétain 1286 catalogues the "twelve principalities" (rgyal pran bcu gnyis) that existed before the Yarlung dynasty unified Tibet, listing seventeen entries with their forts, lords, and ministers — from Zhang Zhung in the west to 'Brog Mo in the east. The text counts "twelve principalities, with Se Re Khri, thirteen" — suggesting the "twelve" was already a traditional convention rather than an exact figure. The principalities were absorbed through conquest by 'O Lde Spu Rgyal, whose "helmet could not be withstood." Each principality had a standard structure of one lord and two ministers, yielding the text's count of twenty-four ministers (plus one) across twelve (plus one) kingdoms.

Gnyen mtha' (གཉེན་མཐའ, Old Tibetan: gnyen mtha') — "Kinship boundary" or "marriage limit." The four ancient clan boundaries that defined permissible marriage alliances in pre-imperial Tibet. Pelliot tibétain 1286 opens with the "four ancient kinship boundaries" (gna' gnyen mtha' bzhi), naming the four clans — Lde, Skyi, Dags, and Mchims — and the designated bride for each. The system also defines four types of boundary: kinship (gnyen), governance (chab), offspring (pyib), and garment (gos), associated respectively with rock (brag), [damaged], [damaged], and silk (dar). This four-clan marriage system is one of the oldest attested social structures of the Tibetan plateau.

Bhūmi (भूमि; Tibetan: ས, sa) — "Stage" or "ground." In Mahāyāna Buddhism, the bhūmis are the graduated stages of the bodhisattva path from the first direct realization of emptiness to full buddhahood. The classical enumeration is ten stages (daśabhūmi): Joyful, Stainless, Luminous, Radiant, Difficult to Conquer, Manifest, Far-Reaching, Immovable, Good Intelligence, and Cloud of Dharma. At each stage, the bodhisattva progressively abandons conceptual obscurations and perfects specific qualities. The Daśabhūmika Sūtra is the primary source; Candrakīrti's Madhyamakāvatāra structures its entire philosophy around the ten grounds. In Yogācāra soteriology, the practitioner meditating on mere consciousness (vijñaptimātra) progressively destroys conceptualization through the ten stages until nonconceptual wisdom (nirvikalpajñāna) arises spontaneously.

Bodhicitta (बोधिचित्त) — "Mind of awakening" or "awakening heart." The aspiration to attain enlightenment for the benefit of all sentient beings — the motivation distinguishing the bodhisattva path from individual liberation. In Mahāyāna and Vajrayāna, bodhicitta is of two kinds: relative bodhicitta (the conscious aspiration and compassionate practice of the bodhisattva) and ultimate bodhicitta (direct realization of the nature of mind as empty awareness). Mantras and visualizations in Vajrayāna practice are said to focus the mind on bodhicitta, countering self-centred motivation. Śāntideva's Bodhicaryāvatāra (8th century CE) is the most influential text on its cultivation. Nāgārjuna's Bodhicittotpādavidhi ("Rite of Generating the Awakening Mind," D3966) is a liturgical ceremony for formally generating both aspirational and ultimate bodhicitta through the seven-branch rite — the four bodhicitta verses at its heart appear also in the Bodhicaryāvatāra (III.23), suggesting this rite as an older source.

Saptāṅga-pūjā (सप्ताङ्गपूजा; Tibetan: ཡན་ལག་བདུན་པ, yan lag bdun pa) — "Seven-branch worship" or "seven-limbed prayer." The foundational devotional liturgy of Tibetan Buddhism, performed at the opening of virtually every practice session across all schools. The standard seven branches are: prostration, offering, confession, rejoicing, requesting the turning of the wheel of Dharma, requesting the teachers not to pass into nirvāṇa, and dedication of merit. The practice structures the practitioner's relationship to the Three Jewels comprehensively — moving from humility through purification to aspiration. The most famous seven-branch prayer is contained in the Bhadracaryāpraṇidhāna (Aspiration for Noble Conduct), but many independent compositions exist. Śākyaśrībhadra's version (D3980, Degé Tengyur) replaces the requesting branches with going for refuge and generating bodhicitta, making it a self-contained path-manual culminating in the aspiration for rebirth in Tuṣita. Nāgārjuna's Bodhicittotpādavidhi (D3966) is another independent seven-branch composition, structured as a complete ceremony for generating bodhicitta — it may be one of the earliest surviving examples of the seven-branch format in Indian Buddhism.

Tuṣita (तुषित; Tibetan: དགའ་ལྡན, dga' ldan) — "Joyous" or "Contented." The heavenly realm in Buddhist cosmology where the future Buddha Maitreya currently resides, awaiting the time to descend and turn the wheel of Dharma on Earth. In Mahāyāna tradition, bodhisattvas spend their penultimate life in Tuṣita before taking final birth as a buddha — both Śākyamuni and the future Maitreya are said to have taught there. The aspiration for rebirth in Tuṣita is one of the most common prayers in Tibetan Buddhism, appearing in Śākyaśrībhadra's Seven Branches of Entering the Practice (D3980) and countless other texts. The Gelug school's main monastery, Ganden (དགའ་ལྡན), is named after Tuṣita. The prayer reflects a practical devotional theology: by being born near Maitreya, one ensures hearing the Dharma in the next turning of the wheel.

Tsha-tsha (Tibetan: ཚ་ཚ, tsha tsha; from Sanskrit sāccha) — Small votive tablets or miniature stūpas made from clay pressed into carved molds. One of the most widespread merit-generating practices in Tibetan, Nepali, Burmese, and Southeast Asian Buddhism for over a millennium. Tsha-tsha are made for a variety of purposes: to generate merit, to mark pilgrimage sites, to fill the interiors of larger stūpas, to honour the dead, or as acts of devotion. The clay may be mixed with sacred substances — ashes of cremated masters, ground relics, or medicinal herbs. The molds typically bear images of buddhas, bodhisattvas, or stūpas, and often include inscribed mantras, particularly the pratītyasamutpāda gāthā (the dependent origination verse: ye dharmā hetuprabhavā). Atiśa's "Rite of Making Tsha-Tsha" (D3976, Degé Tengyur) provides the complete liturgical procedure: generating bodhicitta, reciting the Vairocana dhāraṇī twenty-one times over the clay, consecrating the mold, stamping while chanting the dependent origination formula, offering grain or flowers, and concluding with a dedication of merit. The word tsha-tsha derives from Sanskrit saccha or sāci (a stamp or impression), entering Tibetan through Indian Buddhist material culture.

Śākyaśrībhadra (शाक्यश्रीभद्र; Tibetan: ཤཱཀྱ་ཤྲཱི་བྷ་དྲ, shAkya shrI bha dra) — The last great Indian Buddhist paṇḍita (c. 1127–1225 CE). He served as abbot of Vikramaśīla, one of the great monastic universities of India, until its destruction by the forces of Bakhtiyar Khalji in 1203. He fled to Tibet, where he spent the last two decades of his life teaching and translating. His presence in Tibet was historically momentous — he was among the last living carriers of the Indian Buddhist scholastic tradition, and his teachings directly shaped the development of Tibetan Buddhist monasticism. His works in the Degé Tengyur include D3963 (Verses of Instruction on the Great Vehicle, a path-manual composed while traveling as a refugee) and D3980 (Seven Branches of Entering the Practice, the seven-branch prayer that closes the Madhyamaka section). Both texts were translated into Tibetan by the monk Byams pa'i dpal working directly with Śākyaśrībhadra — the standard paṇḍita-lotsāwa collaborative method.

Lojong (Tibetan: blo sbyong) — "Mind training." A genre of Tibetan Buddhist practice instruction aimed at transforming the mind's habitual tendency toward self-cherishing and aversion into bodhicitta and compassion. The Lojong tradition traces to the Indian master Atiśa (982–1054 CE), transmitted through the Kadam school and codified in texts such as the Seven Points of Mind Training (Blo sbyong don bdun ma) attributed to Chekawa Yeshe Dorje (12th century). Lojong slogans — "Be grateful to everyone," "When the world is full of evil, transform all mishaps into the path of awakening," "Don't be predictable" — are short imperatives designed to be carried into daily life as ongoing practice. The most demanding Lojong teaching instructs the practitioner to dedicate their practice explicitly to their most difficult enemy: by generating real compassion for the source of greatest suffering, the practitioner breaks the ego's deepest defense. The related practice of tonglen (giving and taking) involves breathing in the suffering of others and breathing out happiness — a radical inversion of normal self-protective instinct. Evelyn Ruut's 2005 account of reconciling with her father by dedicating her Vajrayana practice to him, at her teacher's instruction, is a first-hand record of Lojong in practice.

Two Truths (Sanskrit: saṃvṛti-satya and paramārtha-satya; Tibetan: kun rdzob bden pa and don dam bden pa) — The central epistemological doctrine of Madhyamaka Buddhism, distinguishing conventional truth from ultimate truth. Conventional or relative truth (saṃvṛti) is the realm of everyday experience — persons, objects, causes, and effects — all of which arise dependently and are therefore real in their own domain. Ultimate truth (paramārtha) is the emptiness of all phenomena: the recognition that nothing, including the self, possesses inherent independent existence. The distinction does not render conventional truth false — both truths are valid in their register. Nāgārjuna argued that failure to distinguish the two is the root of misunderstanding the teaching. In Vajrayāna practice, the Two Truths framework directly governs visualization: deities, mantras, and the self exist in relative reality as real and effective mental formations; in ultimate reality, all dissolve into emptiness. Evelyn Ruut's 2003 account of Tibetan Buddhist practice explains it precisely: the deities "exist to us in relative reality, just like your 'self,' subject to causes and conditions. Ultimately, like your 'self,' it is a different story, and neither one has existence of their own."

Yidam (Tibetan: yi dam; also iṣṭadevatā in Sanskrit) — In Vajrayāna Buddhism, the personal or chosen meditational deity assigned to a practitioner through initiation and used as the central support for deity yoga (lha'i rnal 'byor). In this practice, the yidam is not worshipped as an external god but visualized, identified with, and ultimately dissolved: the practitioner generates themselves as the deity — arising in the deity's form, speaking with the deity's mantra, residing in the deity's pure realm — and at the close of practice dissolves the entire visualization into emptiness. The yidam corresponds to the practitioner's temperament, school, and initiation lineage. Vajrayoginī and Cakrasaṃvara are principal Kagyu yidams; Yamāntaka and Guhyasamāja belong to the Gelug tradition; Tārā and Chenrezig (Avalokiteśvara) are widespread. Evelyn Ruut's alt.religion.buddhism essay explains the logic directly: the visualized deity is "a mentally generated image with a purpose" — not external divine power but the practitioner's own enlightened qualities given form so that they can be identified with and eventually recognized as one's nature.

Clear Light (Tibetan: 'od gsal; Sanskrit: prabhāsvara) — The foundational luminous quality of mind in Tibetan Buddhist teaching: the unconditioned, unobstructed awareness that underlies all experience and that is revealed when conceptual obscurations are dissolved through advanced practice. The clear light is described not as something attained from the outside but as the natural state of mind — primordially present, temporarily covered by habitual patterns of attachment and aversion. In the Six Yogas of Nāropa, clear light practice ('od gsal rnal 'byor) is the penultimate yoga: the practitioner trains to recognize and sustain the clear light as it arises naturally in sleep and at death, rather than being swept away into confused rebirth. In Dzogchen, clear light ('od gsal) is synonymous with rigpa — naked awareness, the self-knowing nature of mind that is primordially pure and beyond arising or ceasing. The Karma Kagyu's Mahāmudrā tradition reaches the same recognition through a different framework: the nature of mind (sems nyid) is luminous, unobstructed, and beyond elaboration. Evelyn Ruut's Vajrayana essay closes with an image of this dissolution: "everything — deities, mantras, meditations, even the self — is dissolved at the end of each practice by the meditator" into what Tibetan teachers name the clear light of emptiness.

Mahāsiddha (महासिद्ध, Tibetan: གྲུབ་ཐོབ་ཆེན་པོ, grub thob chen po) — "Great accomplished one." The eighty-four Mahāsiddhas are the legendary masters of Indian Vajrayāna Buddhism — kings, monks, fishermen, cobblers, poets, yoginīs — who attained spiritual accomplishment (siddhi) through unconventional paths. The tradition of enumerating eighty-four siddhas is preserved in several Indian and Tibetan sources, with the best-known list attributed to Abhayadattaśrī. The Degé Tengyur contains an independent iconographic manual (D4317, grub thob brgyad bcu'i mngon par rtogs pa, "Visualizations of the Eighty-Four Siddhas"), written by the monk Śrīsena in Nepal, which prescribes the visualization form of each siddha: body color, posture, hand-held attributes, and companion. This enumeration differs from Abhayadatta's list — several siddhas appear twice (Saraha, Lavapa), three are explicitly female yoginīs, and the ordering and naming vary. Prominent figures include Lūyīpā (the first), Saraha the arrow-maker, Tilopa and Nāropa (founders of the Kagyu lineage), Virūpa, Ḍombipa the tiger-rider, Indrabhūti the king, Ghaṇṭāpa the bell, Āryadeva the philosopher, and Kukkuripa the dog-keeper. The Mahāsiddha tradition represents the integration of scholarship and yogic practice, demonstrating that awakening is available in any circumstance of life.

Karma Kagyu (Tibetan: Karma bKa' brgyud) — One of the four major sub-schools of the Kagyu school of Tibetan Buddhism, founded in the 12th century by Düsum Khyenpa (1110–1193), who became the first Karmapa. The Kagyu school itself traces to the Indian mahāsiddha Tilopa (988–1069), his disciple Nāropa, the Tibetan translator Marpa Lotsawa, and the yogi-poet Milarepa — a lineage known for direct transmission of the Mahāmudrā teachings (the recognition of mind's nature without conceptual elaboration). The Karma Kagyu sub-school is distinguished by the Karmapa succession, the oldest recognized tulku (reincarnate lama) lineage in Tibetan Buddhism, now in its seventeenth incarnation. The primary American seat of the Karma Kagyu is Karma Triyana Dharmachakra (KTD), founded in Woodstock, New York in 1978 by the Sixteenth Karmapa, Rangjung Rigpe Dorje, on his first visit to the United States. KTD became the main center for Karma Kagyu practice and teacher training in the West, housing Karmapa's seat outside Tibet. The Karma Kagyu's principal meditation practices include the Nāropa Six Yogas (tummo, illusory body, dream yoga, clear light, bardo practices, and phowa), Mahāmudrā, Vajrayoginī and Cakrasaṃvara tantras, and the Lojong mind-training tradition inherited from Atiśa and the Kadam school.

Trikāya (त्रिकाय) — "Three Bodies." The Mahāyāna Buddhist teaching that a buddha has three modes of being: the Dharmakāya (Truth Body), the Saṃbhogakāya (Enjoyment Body), and the Nirmāṇakāya (Emanation Body). The Dharmakāya is the Buddha's ultimate nature — formless, unconditioned, identical with emptiness and buddha-nature, not born and not destroyed. The Saṃbhogakāya is a subtle, luminous form visible only to advanced bodhisattvas in meditative states — the "enjoyment body" of transcendent bliss. The Nirmāṇakāya is the physical, tangible form a buddha takes in the world — the historical Śākyamuni, visible to ordinary beings. In Vajrayāna practice, each body corresponds to a different level of the path and to different modes of realization. The framework resolves a deep tension in Buddhist thought: the transcendence implied by the historical Buddha's final nirvāṇa and the ongoing compassionate presence of Buddhahood in the world. Nāgārjuna's Kāyatrayāvatāramukha (The Door for Entering into the Three Bodies, D3890) is the only text in the Madhyamaka section of the Tengyur devoted entirely to the trikāya, approaching it through a Yogācāra-Madhyamaka synthesis: consciousness-only (vijñaptimātra) analysis reveals the three natures (trisvabhāva), which map directly onto the three bodies — the imagined nature is the nirmāṇakāya, the dependent nature is the sambhogakāya, and the perfected nature is the dharmakāya.

Triśikṣā (त्रिशिक्षा, Tibetan: བསླབ་པ་གསུམ, bslab pa gsum) — "Three Trainings." The threefold framework structuring all Buddhist practice: (1) higher moral discipline (adhiśīla, ལྷག་པའི་ཚུལ་ཁྲིམས), which turns one away from evil; (2) higher mind or concentration (adhicitta, ལྷག་པའི་སེམས), which abandons attachment to sense pleasures that the childish mistake for meaningful; and (3) higher wisdom (adhiprajñā, ལྷག་པའི་ཤེས་རབ), through which the afflictions are exhausted and nirvana attained. Vasubandhu's Verse 10 commentary in the Concise Meaning of the Verses from Treatises (D4103) uses the three trainings as the structural spine: each pada of the root verse on hearing maps to one training, and together they chart the path from right view to complete liberation. The framework also maps to the three transcendences: moral discipline transcends evil (pāpa), concentration transcends desire (kāma), and wisdom transcends renewed existence (punarbhava).

Triskandha (त्रिस्कन्ध; Tibetan: ཕུང་པོ་གསུམ་པ, phung po gsum pa) — "Three Heaps." The Sūtra of the Three Heaps (Triskandha-sūtra, also known as the Confession of Downfalls) is a Mahāyāna liturgical text used for confession and purification. The "three heaps" are confession of transgressions, rejoicing in virtue, and dedication of merit. The practice involves prostrating to the thirty-five confession Buddhas while reciting their names and confessing one's faults. Atiśa prescribed its recitation three times daily and three times nightly as part of the bodhisattva's essential practice, combined with the sevenfold offering (saptavidhā-pūjā: prostration, offering, confession, rejoicing, requesting teaching, beseeching the Buddhas to remain, and dedication). The Triskandha remains one of the most commonly recited texts in Tibetan monastic and lay practice.

Trisvabhāva (त्रिस्वभाव, Tibetan: རང་བཞིན་གསུམ, rang bzhin gsum) — "Three Natures" or "Three Own-Natures." The Yogācāra framework for analyzing the nature of all phenomena through three aspects: (1) parikalpita-svabhāva (ཀུན་བརྟགས, kun brtags), the "imagined nature" — the superimposed duality of subject and object that appears real but has no existence, like a snake seen in a rope; (2) paratantra-svabhāva (གཞན་དབང, gzhan dbang), the "dependent nature" — the flow of consciousness arising from causes and conditions, real as process but misperceived through the imagined; (3) pariniṣpanna-svabhāva (ཡོངས་གྲུབ, yongs grub), the "perfected nature" — the dependent nature seen as it truly is, empty of the imagined duality. Nāgārjuna's Kāyatrayāvatāramukha (D3890) maps the trisvabhāva directly onto the trikāya: the imagined nature corresponds to the nirmāṇakāya (emanation body), the dependent nature to the sambhogakāya (enjoyment body), and the perfected nature to the dharmakāya (truth body). This mapping represents a distinctive Yogācāra-Madhyamaka synthesis: Yogācāra analysis of consciousness provides the epistemological framework, while Madhyamaka emptiness provides the ontological conclusion.

Upadeśa (उपदेश, Tibetan: མན་ངག, man ngag) — "Pith instructions," "personal guidance," or "esoteric instruction." A genre of Buddhist literature transmitting direct experiential guidance from guru to disciple, as distinct from sūtra (the Buddha's public discourses) and śāstra (philosophical treatise). An upadeśa presupposes the living relationship of oral transmission — the text itself is a condensation of what was meant to be received from a teacher's mouth, not read from a page. Dharmeśvara's Yogāvatāra-upadeśa (D4075) makes this explicit with a striking closing warning: "Those who enter merely by relying on texts without the proper ritual will turn their backs on these accomplishments, and various sufferings will arise — so the Tathāgata has spoken." The genre distinction matters because it marks the boundary between what can be transmitted through writing and what requires embodied presence. In the Tibetan tradition, upadeśa literature forms the practical backbone of meditation instruction, while sūtra and śāstra provide the philosophical framework. The Tibetan rendering man ngag carries the connotation of something whispered, precious, not to be scattered.

Vajrapada (वज्रपद, Tibetan: རྡོ་རྗེའི་ཚིག, rdo rje'i tshig) — "Diamond words" or "adamantine utterances." In the Madhyāntavibhāga (Chapter V, Toh D4021), Maitreya lists ten vajrapada that summarize the nature of reality in compressed, irreducible statements: (1) existence and non-existence, (2) non-inversion, (3) abiding, (4) being like an illusion, (5) non-conceptuality, (6) by nature always luminous, (7) affliction and complete purification, (8) being like space, (9) without decrease, (10) without excess. These ten are called "diamond" because they are indestructible — each one resists reduction to a simpler truth. The term draws on the Buddhist metaphor of vajra (diamond/thunderbolt) as that which is unbreakable and all-cutting: each word cuts through a specific extreme, and no extreme can break the word. The ten diamond words collectively describe the dharma-realm from ten irreducible perspectives.

Dharmadhātugarbha (धर्मधातुगर्भ, Tibetan: ཆོས་ཀྱི་དབྱིངས་ཀྱི་སྙིང་པོ, chos kyi dbyings kyi snying po) — "The essence of the dharma-realm." A term designating the core teaching of dependent origination as the heart of the entire Buddhist doctrine. The verse ye dharmā hetuprabhavā — "Those dharmas which arise from causes, their cause and their cessation, the Tathāgata has proclaimed; such is the way of the great śramaṇa" — was inscribed on stūpas across Asia from India to Indonesia and became known as the Buddhist creed, the public confession of the dharma in a single verse. Nāgārjuna's Dharmadhātugarbhavivaraṇa (D4101) is a compact commentary unpacking this verse into the seven result-links of the twelve-fold chain of dependent origination (consciousness through aging-and-death), the five cause-links (ignorance, craving, grasping, formations, becoming), and the cessation that is nirvāṇa. The commentary also applies the verse to the Four Noble Truths, the forward and reverse sequences of dependent origination, and the six qualities that define "great" — including the vivid image of practicing with diligence "as if one's very head were on fire."

Hrī and Apatrāpya (Sanskrit: hrī, apatrāpya; Tibetan: ངོ་ཚ་ཤེས་པ, ngo tsha shes pa and ཁྲེལ་ཡོད་པ, khrel yod pa) — The twin moral guardians in Buddhist ethics: shame (hrī) — the internal sense of moral self-respect that recoils from wrongdoing out of regard for oneself — and conscience (apatrāpya) — the external awareness that recoils from wrongdoing out of regard for others. The Buddha declared these "two dharmas that protect the world." In the Abhidharma, they are classified among the eleven virtuous mental factors. Vasubandhu identifies hrī as the specific antidote to the cause of affliction's arising: improper mental engagement (ayoniso manaskāra). One who possesses shame abandons the conditions under which afflictions arise, because having examined one's own and others' mindstreams, out of shame one does not engage in wrongdoing (D4103, verse 9).

Seven-Branch Practice (Sanskrit: saptāṅga; Tibetan: ཡན་ལག་བདུན་པ, yan lag bdun pa) — The foundational Buddhist devotional liturgy consisting of seven acts: prostration (phཡag ‘tshal), offering (mchod pa), confession (bshags pa), rejoicing (rjes su yi rang), requesting the turning of the dharma wheel (bskul ba), supplicating the buddhas not to pass into nirvāṇa (gsol ba gdab pa), and dedication of merit (bsngos ba). This seven-limbed structure underlies virtually all Mahāyāna Buddhist ritual practice, from Śāntideva’s Bodhicaryāvatāra to daily monastic chanting. Atiśa’s Guru-kriyā-krama (D3977) prescribes the seven-branch practice as the ritual framework within which the guru generates bodhicitta in the student — the ceremonial container for the entire Mahāyāna initiation.

Seven Noble Riches (Sanskrit: saptadhana; Tibetan: འཕགས་པའི་ནོར་བདུན, 'phags pa'i nor bdun) — The seven spiritual treasures that constitute true wealth in Buddhist teaching, contrasted with material possessions: faith (śraddhā), ethical conduct (śīla), a sense of shame (hrī), a sense of propriety (apatrāpya), learning (śruta), generosity (tyāga), and wisdom (prajñā). Atiśa's Stainless Jewel Letter advises King Niryā-phala to "cast off all material possessions and grow rich with the noble riches" — a verse that distills the Buddhist ethic of renunciation: true abundance is internal, and the one who possesses these seven is wealthier than any king.

Dharmakāya (धर्मकाय; Tibetan: ཆོས་ཀྱི་སྐུ, chos kyi sku) — "Truth Body" or "Reality Body." The ultimate nature of a buddha in the Trikāya (Three Bodies) framework — formless, unconditioned, identical with emptiness and buddha-nature, neither born nor destroyed. While the Nirmāṇakāya appears in the world and the Saṃbhogakāya shines in meditative states, the Dharmakāya transcends all form and conceptual elaboration. It is not a body in any physical sense but the nature of reality itself as realized by an awakened mind. Asaṅga's Praise of the Qualities of the Dharmakāya (Tengyur D1115) praises seventeen "uncommon qualities" (thun mong ma yin pa'i yon tan) abiding in this body — from compassion and omniscience to spontaneous accomplishment and non-elaboration — concluding with six apophatic negations: without blemish, without fault, without turbidity, without fixation, without agitation, without elaboration. The Dharmakāya is what remains when all that can be negated has been negated.

Saṃbhogakāya (संभोगकाय; Tibetan: ལོངས་སྤྱོད་རྫོགས་པའི་སྐུ, longs spyod rdzogs pa'i sku) — "Body of Complete Enjoyment." The second of the three bodies (trikāya) of the Buddha — a subtle, luminous form visible only to advanced bodhisattvas in meditative states and in pure buddha-fields. Unlike the Dharmakāya (which is formless and beyond conception) and the Nirmāṇakāya (which appears in the world to ordinary beings), the Saṃbhogakāya exists as a radiant form adorned with the thirty-two major and eighty minor marks, teaching the Dharma ceaselessly in transcendent realms. Vasubandhu's Praise of the Three Jewels (D1146) praises it as "the Body of Complete Enjoyment" — one of three aspects through which the Buddha Jewel manifests.

Triratna (त्रिरत्न; Tibetan: དཀོན་མཆོག་གསུམ, dkon mchog gsum) — "Three Jewels" or "Triple Gem." The three foundational refuges of Buddhism: the Buddha (the awakened teacher), the Dharma (the teaching), and the Sangha (the community of practitioners). Taking refuge in the Three Jewels is the formal act that defines a Buddhist. Vasubandhu's Praise of the Three Jewels (D1146) devotes one verse to each Jewel, praising the Buddha through his three bodies, the Dharma through its three dimensions, and the Sangha through its three types — a miniature triptych in which the structure mirrors the content. Mātṛceṭa wrote a parallel hymn of the same title (D1144), giving each Jewel a single devotional image.

Aṣṭamahāsthāna (अष्टमहास्थान; Tibetan: གནས་ཆེན་པོ་བརྒྱད, gnas chen po brgyad) — "Eight Great Holy Sites." The eight places where the supreme events of the Buddha Śākyamuni's life occurred: Lumbinī (birth), Bodh Gayā (awakening), Vārāṇasī (first teaching), Śrāvastī (Great Miracle), Saṃkāśya (descent from the gods), Rājagṛha (reconciliation of the Sangha), Vaiśālī (blessing of the lifespan), and Kuśinagara (parinirvāṇa). Pilgrimage to these eight sites was a central devotional practice in Indian Buddhism. Nāgārjuna composed two separate hymns (D1133 and D1134) praising the stūpas at each site, and Hariśadeva wrote a parallel homage (D1168) that spirals outward from the eight events to encompass every Buddhist sacred geography.

Siddhi (सिद्धि) — "Accomplishment" or "supernatural power." In Hindu and Buddhist tantra, capacities that are said to arise from intensive meditation and spiritual practice — traditionally enumerated as eight great siddhis, including the ability to make oneself infinitesimally small, to levitate, to become immeasurably large, and to exert irresistible will. In Buddhist teaching, siddhis are treated with characteristic caution: they may demonstrate inner transformation but also carry the danger of spiritual pride and of deceiving followers who cannot distinguish genuine attainment from showmanship. The Pāli texts describe the Buddha refusing on multiple occasions to perform miracles for the purpose of attracting followers, identifying the "miracle of instruction" — which transforms the listener's mind through dharma — as the only truly reliable supernatural act.

Jambhala (जम्भल; Tibetan: ཛམྦྷ་ལ, dzam bha la; also རྨུགས་འཛིན, rmugs 'dzin) — The Buddhist god of wealth and abundance, a wrathful bestower of material fortune closely related to Kubera-Vaiśravaṇa, the pan-Asian lord of wealth. Jambhala appears as a stout, dark-blue dwarfish figure with one face and two hands, adorned with ornaments of the eight great nāgas. He holds a blood-filled skull cup (kapāla) in his right hand and a jewel-spewing treasure-mongoose (nakula) in his left. The Buddha Akṣobhya sits upon his crown, placing him in the Akṣobhya family. His Tibetan translation-name rmugs 'dzin ("holder of confusion") renders the Sanskrit etymologically; his epithet "Lord of Waters" (chu dbang) connects him to flowing wealth. He is also known as Ucchusma (ucchuṣma, "the scorching one"), identifying his wrathful purifying aspect. The Praise of Ārya Jambhala (D3749), composed by Jñānavajra, celebrates him as "wish-fulfilling jewel endowed with every virtue" who fulfills the hopes of beings tormented by poverty, and closes with a prayer for all beings to be freed from the bonds of poverty's suffering. Jambhala is the male counterpart to Vasudhārā, the goddess of abundance. A second Praise of Ārya Jambhala (D3748), attributed to the venerable Candra (likely Candrakīrti, c. 600–650 CE) and translated by Pa Tshab Nyi ma Grags, takes a strikingly different tone: a raw devotional complaint in which the poet stands before Jambhala with tears streaming down his face, asking "Why do you not look?" and demanding to know where the deity's "compassion-cow, milker of the three worlds" has gone. Together D3749 and D3748 form a devotional pair: formal praise and weeping prayer, both addressed to the same god of the poor. A third praise, the Distinguished Praise of Noble Jambhala, Lord of Waters (D3747) by Vasudhāraśrī, celebrates his more elaborate Jalendra ("Lord of Waters") form through eight tantric verses cataloguing twenty ritual activities — from the seed syllable JAṂ through which he manifests to the ten powers of his ten-syllable mantra (summoning, treasure-opening, protection, child-granting, life-extension, and more). The closing verse plays on the deity's name: jambha means "stupefaction," and the poet says Jambhala "overwhelms" (rmugs byed) beings of three realms — not with sorrow, but with abundance.

Kawa Paltsek (Tibetan: ཀ་བ་དཔལ་བརྩེགས, ka ba dpal brtsegs) — One of the sad mi bdun ("seven test monks"), the first seven Tibetans ever ordained as Buddhist monks by the Indian master Śāntarakṣita at Samyē Monastery in the 8th century CE, during the reign of King Khri srong lde btsan. He became one of the most prolific translators of the Tibetan imperial period, rendering dozens of sūtras and tantric texts from Sanskrit into Tibetan. His Pith Instructions on the Stages of View (ལྟ་བའི་རིམ་པའི་མན་ངག, D4356) is a doxographical verse treatise classifying all views from worldly through the Nyingma hierarchy of nine vehicles up to Atiyoga, followed by meditation instructions, signs of realization, and fierce warnings against those who claim high view without corresponding practice. It is one of the earliest surviving Tibetan Buddhist compositions — written not by an Indian master translated into Tibetan, but by a Tibetan author in the first generation of the tradition.

Sad mi bdun (Tibetan: སད་མི་བདུན, sad mi bdun) — "The Seven Test Monks" or "Seven Examined Men." The first seven Tibetans ordained as Buddhist monks by the Indian paṇḍita Śāntarakṣita at Samyē Monastery (c. 779 CE), as a test of whether Tibetans could sustain monastic discipline. Their ordination marked the formal establishment of the Buddhist saṅgha in Tibet. The seven are traditionally identified as: Ba Selnang (སྦ་གསལ་སྣང), Ba Ratna, Pagor Vairocana (དཔའ་གོར་བཻ་རོ་ཙ་ན), Ngenlam Gyelwa Chokyang, Ma Rinchen Chok, Khön Lu'i Wangpo Sungwa, and Lasum Gyelwa Changchub. Several became major translators — Vairocana in particular is credited with bringing the Dzogchen teachings to Tibet. The ordination was a political and spiritual watershed: King Khri srong lde btsan's decision to test monastic life with these seven determined whether Buddhism would take institutional root in Tibet.

Nine Vehicles (Tibetan: ཐེག་པ་དགུ, theg pa dgu) — The Nyingma school's comprehensive classification of all Buddhist paths and views into nine ascending vehicles (yāna). The system organizes the entire Buddhist teaching from the most basic through the most esoteric: (1) Śrāvakayāna, (2) Pratyekabuddhayāna, (3) Bodhisattvayāna (collectively the three sūtra vehicles), (4) Kriyā Tantra, (5) Upa Yoga (Caryā Tantra), (6) Yoga Tantra (the three outer tantra vehicles), (7) Mahāyoga, (8) Anuyoga, and (9) Atiyoga (Dzogchen) — the three inner tantra vehicles unique to the Nyingma classification. Each vehicle represents a complete path with its own view, meditation, conduct, and result, but the higher vehicles are held to be more direct. Kawa Paltsek's Pith Instructions on the Stages of View (D4356) — one of the earliest surviving Tibetan compositions — systematically presents all nine in verse, making it a foundational doxographical text of the Nyingma tradition. The nine-vehicle system distinguishes the Nyingma from all other Tibetan schools, which typically use a simpler threefold division (Hīnayāna, Mahāyāna, Vajrayāna).

Figures & Texts

Anāthapiṇḍika (अनाथपिण्डिक, Pāli: Anāthapiṇḍika; Chinese: 給孤獨, Jǐgūdú) — "Feeder of the Destitute." The great lay patron of the Buddha, a wealthy merchant of Śrāvastī whose personal name was Sudatta. He purchased the Jetavana grove from Prince Jeta by covering the ground with gold coins — one of the most famous episodes in Buddhist lore, narrated in Varga 18 of the Buddhacarita. The Jetavana monastery he founded became the Buddha's principal residence during the rainy season for many years. In Mahāyāna tradition, Anāthapiṇḍika exemplifies dāna-pāramitā — the perfection of generosity without attachment to merit.

Kālāma Sutta (Pāli; also Kesamutti Sutta) — The "Charter of Free Inquiry." A short discourse from the Aṅguttara Nikāya in which the Buddha, visiting the Kālāma people of Kesaputta, addresses their uncertainty about competing teachers. His response became the most widely cited Buddhist text in defenses of rational inquiry: do not accept a teaching merely because of tradition, lineage, scripture, logic alone, or the seeming authority of a teacher — but test it by asking whether it is wholesome, praised by the wise, and leads to benefit and happiness. The Kālāma Sutta is sometimes read as an endorsement of unrestricted skepticism, but scholars note that the Buddha's criterion is practical and ethical — does it produce suffering or its cessation? — rather than purely rationalist. The sutta exemplifies the Dharma's characteristic "come and see" (ehipassiko) orientation: the teaching invites examination rather than demanding blind faith.

Aśvaghoṣa (अश्वघोष, Tibetan: རྟ་དབྱངས, rta dbyangs, "Horse-Voice") — Buddhist philosopher-poet of the Kuṣāṇa dynasty (c. 80–150 CE), born in Gandhāra. Author of the Buddhacarita, the earliest complete biography of the Buddha in any language, and the Saundarananda, both composed in classical Sanskrit kāvya. The Tengyur preserves several shorter works attributed to him in the Epistles section: the Śokavinodana ("Alleviating Sorrow," D4176), a consolation letter on grief; the Śokavinodana ("Dispelling Grief," D4177), a verse meditation on the universality of death through vivid imagery — lions, elephants in mud, birds falling from the sky; and the Daśakuśalakarmapatha-nirdeśa ("Teaching on the Ten Unwholesome Paths of Action," D4178), a systematic verse compendium defining each of the ten unwholesome karmic paths with its precise constituent conditions ("limbs," yan lag). D4177 and D4178 were translated by the same team (Ajitaśrībhadra and Śākyaprabha) and appear consecutively in the Tengyur. The Stotra section preserves the Gaṇḍīstotragāthā ("Verses of Praise of the Gaṇḍī," D1149), a liturgical praise poem in 32 verses celebrating the Buddha's conquest of Māra through the sounds of the monastery bell, with extensive transliterated Sanskrit onomatopoeia. Tradition holds Aśvaghoṣa was converted to Buddhism from Brahmanism and became a major figure of early Mahāyāna thought.

Kaniṣka (कनिष्क; Chinese: 迦膩色迦, Jiānìsèjiā) — Kushan emperor (r. c. 127–150 CE), ruler of a vast Central Asian empire spanning from the Oxus to the Ganges. Famous as a royal patron of Buddhism second only to Aśoka, he convened the Fourth Buddhist Council in Kashmir. Mātṛceṭa's Mahārājakaniṣkalekha ("Letter to the Great King Kaniṣka," Tengyur D4184) is a verse epistle of counsel addressed to him, urging governance through compassion, impermanence, and the protection of animals. The Kushan period (1st–3rd centuries CE) was a golden age of Buddhist literary culture, producing Aśvaghoṣa's Buddhacarita and the Gandhāran art tradition.

Masūrakṣa (मसूरक्ष; Tibetan: མ་སཱུ་རཀྵ, Ma sū rak+sha) — Indian nītishāstra author whose Nītishāstra (Tengyur D4335) is preserved in Tibetan in the Miscellaneous section of the Degé Tengyur. Nothing is known of his life outside this text. The name may be a corruption of Maṣūrakṣa or a variant scribal tradition. His treatise comprises seven chapters covering the qualities of kings, the nature of friendship, speech, proper conduct, the wicked, miscellaneous wisdom, and summary teachings — a practical ethical handbook in verse drawing on the pan-Indian nītishāstra tradition shared by both Hindu and Buddhist compilers. Translated into Tibetan by the Indian paṇḍita Vidyākaraprabha and the Tibetan translator Peltsek.

Ravigupta (रविगुप्त; Tibetan: ཉི་མ་སྦས་པ, Nyi ma sbas pa) — "Sun-Protected." Indian Buddhist author of the Gāthākoṣa ("Treasury of Verses," Tengyur D4331), a subhāṣita anthology preserved in the Miscellaneous section of the Degé Tengyur. Nothing is known of his life outside this text. The Tibetan rendering of his name — Nyi ma sbas pa — translates the Sanskrit transparently: ravi ("sun") + gupta ("protected, hidden"). His collection comprises approximately eighty wisdom verses treating impermanence, the value of learning, the dangers of pride and bad company, the nature of wealth, and the qualities of the wise — themes shared with the nītishāstra genre but organized as a verse anthology rather than a systematic treatise. The text opens with homage to the Buddha and closes with a dedication of merit, framing secular wisdom within a Buddhist soteriology. Translated into Tibetan by the Indian paṇḍita Ācārya Dharmākaradeva and the translator-monk Bandé Yeshé Dé.

Śrī Siṃha (Sanskrit: श्रीसिंह; Tibetan: དཔལ་གྱི་སེང་གེ, dpal gyi seng ge) — "Glorious Lion." A pivotal early master of the Dzogchen (Great Perfection) lineage, traditionally placed in the chain of transmission from Garab Dorje to Mañjuśrīmitra to Śrī Siṃha, who then transmitted the teachings to Vairocana and Padmasambhava. His Illuminating Lamp (སྒྲོན་མ་སྣང་བྱེད, D4353 in the Degé Tengyur) is a tantric commentary on the Heart Sūtra, interpreting every phrase on three levels — outer (Prajñāpāramitā), inner (Mahāyoga tantra), and secret (Dzogchen) — revealing the Heart Sūtra as a complete map of the entire Buddhist path. The text was transmitted by Vairocana to King Khri srong lde btsan at the royal court. Śrī Siṃha is one of the foundational figures linking Indian Buddhist tantra to the Tibetan Nyingma tradition.

Vararuci (वररुचि; Tibetan: མཆོག་སྲེད, mchog sred) — "Supreme Desire." Indian author of the Śatagāthā ("The Hundred Verses," Tengyur D4332), a subhāṣita anthology preserved in the Miscellaneous section of the Degé Tengyur. The name Vararuci is shared by several figures in Indian literary history — a grammarian associated with the Prākṛtaprakāśa, a legendary court-poet of Vikramāditya, and the author of this verse collection. Whether these are the same person is unknown. The Śatagāthā comprises approximately one hundred wisdom verses on learning, virtue, leadership, desire, companionship, the nature of the base and the noble, impermanence, and death — framed within a Buddhist soteriology, opening with homage to the Three Jewels and closing with meditation on death and reliance on the Dharma. Paired with Ravigupta's Gāthākoṣa (D4331), the two collections form a matched subhāṣita pair in the Tengyur. Translated into Tibetan by the Indian paṇḍita Vinayacandra and the translator-monk Chökyi Sherab (Chos kyi shes rab).

Mātṛceṭa (मातृचेट; Tibetan: མ་ཏྲྀ་ཙེ་ཊ, Ma tri tse ṭa) — Buddhist poet of the Kushan period (c. 2nd century CE), celebrated alongside Aśvaghoṣa as one of the two great masters of Buddhist kāvya, and praised by name by the Buddha in the Mañjuśrīmūlakalpa. His Mahārājakaniṣkalekha ("Letter to the Great King Kaniṣka," Tengyur D4184) is a verse epistle of counsel addressed to King Kaniṣka, covering governance, impermanence, the company of the wise, and compassion for animals. His Varṇārhavarṇa ("Hymn of Praise to One Worthy of Praise") and Śatapañcāśatka ("One Hundred and Fifty Verses") are major works of Buddhist devotional poetry. His Caturviparyayakathā ("Discourse on Abandoning the Four Inversions," Tengyur D4169) is a philosophical poem dismantling the four cognitive inversions — perceiving permanence, happiness, purity, and self in what is impermanent, suffering, impure, and selfless — through vivid imagery including the famous dog-and-bone metaphor and the condemned man garlanded with flowers. The Sanskrit originals of his epistles and philosophical poems are lost; they survive only in Tibetan translation in the Tengyur.

F. Max Müller — Friedrich Max Müller (1823–1900), German-born Oxford philologist and founding editor of the Sacred Books of the East, the fifty-volume series that brought the scriptures of Hinduism, Buddhism, Zoroastrianism, Islam, Confucianism, Daoism, and Jainism to the English-speaking world. Taylorian Professor of Modern European Languages at Oxford. His 1881 translation of the Dhammapada (SBE Volume X) and his 1894 translation of the Diamond Sutra (SBE Volume XLIX) remain among the most widely used English renderings of these texts. More than any scholar of his century, Müller opened the door between the religious traditions of Asia and the Western academy.

Kāvya (काव्य) — Classical Sanskrit court poetry, characterized by elaborate metre, ornamental language, and aesthetic refinement. The Buddhacarita by Aśvaghoṣa is among the earliest surviving examples. Kāvya bridges the sacred and the literary — its sophisticated artistry was a vehicle for philosophical and religious teaching accessible to the educated Brahmanical world.

Buddhacarita (बुद्धचरित) — "Acts of the Buddha." An epic poem in twenty-eight cantos by Aśvaghoṣa (1st–2nd century CE), narrating the life of Siddhārtha Gautama from birth to Parinirvāṇa. The Sanskrit original survives complete only through Book XIII; the remainder is preserved in Tibetan and Chinese translations. The poem was enormously influential across Asia.

Parinirvāṇa (परिनिर्वाण) — "Final extinction" or "complete nirvāṇa." The death of an enlightened being — specifically the passing of the Buddha at Kuśinagara. Not mere physical death but the final release from the cycle of rebirth, the dissolution of the aggregates with no further becoming. The closing chapters of the Buddhacarita narrate the Parinirvāṇa and the distribution of the Buddha's relics.

Devadatta (देवदत्त, Pāli: Devadatta; Chinese: 提婆達多, Típódáduō) — The Buddha's cousin and one-time disciple who became his chief adversary. In the Buddhacarita (Varga 25), Devadatta's jealousy leads him to plot against the Buddha — he rolls a boulder down Gṛdhrakūṭa mountain and unleashes a drunken elephant in the streets of Rājagṛha, both of which the Buddha subdues through the power of his virtue. Devadatta represents the force of envy within the sangha itself. Tradition holds that he ultimately fell to the lowest hell, though the Lotus Sutra prophesies his eventual buddhahood — a teaching that even the most destructive being carries the seed of awakening.

Dharmarakṣa (曇無讖, Dharmakṣema) — A 5th-century Central Asian monk who translated Buddhist texts into Chinese, including the Buddhacarita. His Chinese rendering of Aśvaghoṣa's poem preserves the cantos (Vargas 18–28) that are lost in the surviving Sanskrit manuscripts, making it essential for any complete English edition.

Dhammapada — See entry under Core Concepts.

Gaṇḍavyūha (गण्डव्यूह, Tibetan: སྡོང་པོ་བཀོད་པ, sdong po bkod pa) — "The Stem Array" or "Entry into the Realm of Reality." The final chapter of the Avataṃsaka Sūtra (Flower Garland Sutra), narrating the pilgrimage of the youth Sudhana through the southern lands of India, visiting fifty-three spiritual teachers (kalyāṇamitra). Each teacher embodies a different aspect of the bodhisattva path — from monks to merchants, from courtesans to night goddesses — demonstrating that realization is found everywhere, not only in monastic settings. Sudhana's tireless journey from teacher to teacher became a model for the devoted student. In Vimalaśrī's Praise of the Holy Guru Puṇyaśrī (D3759), the guru is compared to Sudhana — "having truly set forth to seek the path in the southern lands, walking step by step, tireless" — identifying the teacher as one who embodies the Gaṇḍavyūha's ideal of relentless seeking.

Jetavana (जेतवन, Pāli: Jetavana; Chinese: 祇園精舍, Qíyuán Jīngshè) — "Jeta's Grove." The monastery at Śrāvastī where the Buddha spent the greatest number of rainy seasons, founded jointly by Anāthapiṇḍika (who bought the land) and Prince Jeta (who donated the trees). The Buddhacarita narrates the purchase in Varga 18: Jeta declared he would sell only if Anāthapiṇḍika could cover the ground with gold, and Anāthapiṇḍika did so. Many of the major Mahāyāna sūtras, including the Diamond Sutra, are set at the Jetavana. The ruins survive today near Saheth-Maheth in Uttar Pradesh.

Heart Sutra (Sanskrit: Prajñāpāramitā Hṛdaya Sūtra; Chinese: 般若波羅蜜多心經, Bōrě Bōluómìduō Xīnjīng; Japanese: 般若心経, Hannya Shingyō) — "The Heart of the Perfection of Wisdom." The most widely recited text in Mahāyāna Buddhism — a sutra of fewer than three hundred words that distils the entire Prajñāpāramitā literature into a single incantatory utterance. The bodhisattva Avalokiteśvara teaches Śāriputra that form is emptiness and emptiness is form, then negates every category of Buddhist doctrine: no eye, no ear, no ignorance, no end of ignorance, no suffering, no path. The sutra culminates in the mantra "gate gate pāragate pārasaṃgate bodhi svāhā" — "gone, gone, gone to the other shore." Chanted daily in Zen, Tibetan, and Pure Land temples across Asia. The Chinese translation by Kumārajīva (400 CE) runs to 260 characters — the most compressed expression of emptiness in any Buddhist scripture. F. Max Müller translated both the Larger and Smaller recensions from Sanskrit for the Sacred Books of the East, Volume XLIX (1894).

Diamond Sutra (Sanskrit: Vajracchedikā Prajñāpāramitā; Chinese: 金剛般若波羅蜜經, Jīngāng Bōrě Bōluómì Jīng) — "The Diamond-Cutter of Transcendent Wisdom." A Mahāyāna Buddhist sūtra belonging to the Prajñāpāramitā literature, composed in Sanskrit between the second and fourth centuries CE. The text takes the form of a dialogue between the Buddha and his disciple Subhūti, in which the nature of perception, selfhood, and all phenomena are systematically negated through the characteristic formula: "What was preached as X was preached as no-X, and therefore it is called X." The oldest dated printed book in human history is a Chinese copy of this sūtra, printed in 868 CE. F. Max Müller translated it from Sanskrit for the Sacred Books of the East, Volume 49 (1894).

Dōgen Zenji (道元禅師) — Eihei Dōgen (1200–1253), Japanese Zen master and founder of the Sōtō school of Zen Buddhism in Japan. Author of the Shōbōgenzō, a philosophical masterwork of ninety-five fascicles written in a dense, paradoxical style that interweaves Classical Japanese and Classical Chinese. Born into a noble Kyoto family, he traveled to Song China in 1223, trained under Tiantong Rujing, and returned to establish what would become one of the two major Zen schools in Japan. His writing is among the most philosophically profound in the Buddhist canon.

Língshān Huì (靈山會) — "The assembly on Vulture Peak." The gathering at Gṛdhrakūṭa (Vulture Peak, near Rājagṛha) where Shakyamuni Buddha held up a flower in silence before the assembly and only Mahākāśyapa smiled, signifying the wordless transmission of the Dharma. This moment is considered the origin of the Chan/Zen lineage — the "transmission outside the scriptures, not depending on words." In the Cultivation of the Three Treasures, Jesus Christ cites this event as parallel to the Wordless True Scripture (無字真經) of Yiguandao: the flower sermon and the white stone of Revelation are identified as the same secret, transmitted without words.

Maudgalyāyana (目蓮/目連, Mùlián) — One of the ten great disciples of the Buddha, foremost in supernatural powers (神通第一). Famous for his descent into hell to rescue his mother, who had been condemned to the Hell of Unceasing Torment (無間地獄) for slandering the Three Treasures and causing monks to break their precepts. He brought food to her with his supernatural powers, but it turned to fire in her hands; water turned to blood. Unable to save her alone, he returned to the Buddha and was instructed to prepare a feast of one hundred vegetarian dishes and offer them to the Sangha in all ten directions — the origin of the Yulanpen Assembly (盂蘭盆會, the Ghost Festival). Despite his supernatural powers, Mùlián was killed by heretics who hurled stones upon him; the Buddha told him this karma could not be escaped, because supernatural powers cannot overcome the force of karma. In the Cultivation of the Three Treasures, he descends through spirit-possession at a Yiguandao assembly in Bandung, Indonesia, in 1993, to testify on filial piety and warn against the pursuit of supernatural powers.

Fuyō Dōkai (芙蓉道楷) — Fuyō Dōkai (1043–1118), Chinese Chan master of the Caodong (Sōtō) lineage. Known for refusing imperial honors, including the purple robe and the title "Meditation Master Dingjiao," for which he was exiled. His saying "The blue mountains are constantly walking; the stone woman gives birth by night" provides the central kōan of Dōgen's Mountains and Waters Sutra. His transmission lineage connects through Touzi Yiqing back to Dongshan Liangjie, founder of the Caodong school.

Sansui-kyō (山水経) — "Mountains and Waters Sutra." The twenty-ninth fascicle of Dōgen's Shōbōgenzō, and the only one bearing the character 経 (kyō, "sutra") in its title. Delivered at Kōshō-hōrin-ji temple in the autumn of 1240. The text develops the identity of mountains and waters with the true self and the Buddha Way, working through paradoxical statements like "the blue mountains are constantly walking" and "the eastern mountain moves upon the waters" to demonstrate the nonduality of mind and environment.

Subhūti (सुभूति) — One of the ten great disciples of the Buddha, said to be foremost in the understanding of emptiness (śūnyatā). In the Diamond Sutra, Subhūti serves as the Buddha's interlocutor throughout the dialogue, asking the questions that draw forth the teaching on the Perfection of Wisdom. The Buddha addresses him as "the foremost of those who dwell in peace" — one who has attained arhatship precisely because he does not dwell anywhere, including in the concept of arhatship itself.

Śāriputra (शारिपुत्र, Pāli: Sāriputta; Chinese: 舍利弗, Shèlìfú) — One of the two chief disciples of the Buddha, foremost in wisdom (Pāli: etadagga paññāya). In the Heart Sutra, Śāriputra is the interlocutor to whom Avalokiteśvara addresses the teaching on emptiness — the wisest of the arhats receiving instruction in a wisdom that surpasses even arhatship. In the Larger recension, Śāriputra asks how a practitioner should train in the deep Perfection of Wisdom, and Avalokiteśvara's response constitutes the sutra. The pairing is deliberate: the bodhisattva of compassion teaches the arhat of wisdom, demonstrating that prajñāpāramitā transcends the wisdom of the individual path.

Shōbōgenzō (正法眼蔵) — "Treasury of the True Dharma Eye." Dōgen's masterwork, a collection of ninety-five fascicles composed between 1231 and 1253. Written primarily in Japanese rather than Classical Chinese (unusual for Buddhist texts of the period), the Shōbōgenzō addresses questions of practice, time, being, buddha-nature, and the relationship between mind and world through close readings of kōans and Chinese Chan sayings. It is considered one of the most important works in Japanese philosophy and one of the most challenging Buddhist texts ever written.

Tōzan suijō-kō (東山水上行) — "The eastern mountain moves upon the waters." A saying of the Chinese Chan master Yunmen Wenyan (864–949), founder of the Yunmen school, given in response to a monk's question about the dwelling place of all buddhas. Dōgen takes up this phrase alongside Fuyō Dōkai's "blue mountains constantly walking" as the twin pillars of the Mountains and Waters Sutra.

Yunmen Wenyan (雲門文偃) — Yunmen Wenyan (864–949), Chinese Chan master and founder of the Yunmen school, one of the Five Houses of Chan. Known for his terse, enigmatic responses — often a single word or phrase — that resist conceptual understanding and point directly to reality. His saying "The eastern mountain moves upon the waters" is a central theme of Dōgen's Mountains and Waters Sutra. His dharma-teaching "Mountains are mountains; waters are waters" closes the text.

Dīgha Nikāya (Pāli) — "Long Discourses." One of the five collections (nikāyas) of the Pāli Sutta Piṭaka, containing thirty-four long suttas. Includes the Mahā-Parinibbāna Sutta (the Buddha's final days and Parinirvāṇa), the Sāmaññaphala Sutta (the fruits of the contemplative life), the Mahā Taṇhā-Sankhaya Sutta (on consciousness and rebirth), and the Brahmajāla Sutta (the catalogue of sixty-two wrong views). The Dīgha Nikāya is notable for its extended philosophical dialogues and cosmological teachings.

Madhyamaka (मध्यमक) — "The Middle Way School." One of the two great schools of Mahāyāna Buddhist philosophy (the other being Yogācāra), founded by Nāgārjuna (c. 2nd century CE). The Madhyamaka holds that all phenomena are empty (śūnya) of inherent self-existence — they arise only in dependence on conditions and cannot be grasped as absolutely real or absolutely unreal. This "middle way" between the extremes of Eternalism and Annihilationism is not a compromise but a radical dissolution of both positions. Candrakīrti's Prasannapadā and Āryadeva's Catuḥśataka further developed the school. In East Asia, Madhyamaka entered under the name Sanlun ("Three Treatises School"), and its insights profoundly shaped Chan and Zen.

Nāgārjuna (नागार्जुन) — Buddhist philosopher and founder of the Madhyamaka school, active in South India c. 150–250 CE. His Mūlamadhyamakakārikā ("Root Verses on the Middle Way") is one of the most rigorous and influential philosophical texts in any tradition: it systematically dismantles every possible claim to inherent self-existence using reductio ad absurdum arguments, concluding that all phenomena are empty (śūnya) of fixed nature and arise only in dependence. Nāgārjuna's central insight — that emptiness is itself empty, that śūnyatā is not a new absolute but the dissolution of all absolutes — prevents Madhyamaka from collapsing into nihilism. He is revered in Tibetan Buddhism as a "Second Buddha" and appears in the Mahāyāna tradition as a bodhisattva who received the Prajñāpāramitā teachings from the nāgas. His shorter Mahāyānaviṃśikā ("Twenty Verses on the Great Vehicle," D3833) distills the entire Mahāyāna vision into twenty stanzas: the emptiness of all phenomena, the illusory nature of samsara, and the famous image of a painter frightened by his own terrifying painting — the self-created nature of suffering. His Pratītyasamutpādahṛdayavyākhyāna ("Exposition of the Heart of Dependent Origination," D3837) is an auto-commentary on his own seven root verses (D3836) on the twelve links, cast as a dialogue between student and teacher, proving through eight analogies (recitation, lamp, mirror, seal, magnifying glass, seed, sourness, echo) that empty dharmas arise from empty dharmas without any entity transmigrating — the philosophical core of the middle way between eternalism and nihilism.

Āryadeva (आर्यदेव, Tibetan: འཕགས་པ་ལྷ, ʼPhags pa lha) — The foremost disciple of Nāgārjuna and second patriarch of the Madhyamaka school, active in the 3rd century CE. His principal work, the Catuḥśataka ("Four Hundred Verses"), extends Nāgārjuna's method by applying it to the practical side of the path — systematically dismantling attachment, aversion, and ignorance through the same logic of emptiness. His shorter Hastavālaprakaraṇa ("Treatise on Parts," D3844) uses the famous rope-snake analogy to demonstrate that all entities dissolve under mereological analysis: you see a rope and think "snake"; seeing it as rope dispels the fear; but analyzing the rope into its parts reveals that "rope" too was a mere designation. His Hastavālaprakaraṇavṛtti ("Commentary on the Treatise on Parts," D3845) is a prose autocommentary on the Hastavālaprakaraṇa, expanding each verse into a full argument: the rope-snake analogy becomes a systematic mereological dissolution from rope to strands to atoms, culminating in the directional argument (anything with an east and west side has parts) and the imperative ཐོང་ཤིག — "abandon this!" His Madhyamakabhramaghāta ("The Middle Way: Destroyer of Error," D3850) uses three analogies — cataracts, dream, and darkness — to prove the central Great Vehicle teaching: "not-seeing itself is seeing suchness." His Sthāpitahetusādhananāmaprakaraṇa ("Establishing Rational Reasons for Refuting Errors," D3847) is a systematic dialectical survey of non-Buddhist philosophical schools — Cārvāka materialism, svabhāvavāda, Īśvaravāda, ātmavāda, kālavāda, Sāṃkhya, and others — refuting each through prasaṅga and culminating in the twelve links of dependent origination as the Buddhist alternative to all error. The Tibetan tradition attributes both shorter texts to Āryadeva; some modern scholars assign the Hastavāla to Dignāga and note parallels between the Bhramaghāta and Bhāviveka. His Hastavālavṛtti ("Commentary on the Measure of the Hand," D3849) is a prose autocommentary expanding the verse argument of the Hastavālaprakaraṇakārikā (D3848): it develops the rope-snake analogy into a full mereological dissolution — from rope to strands to fibers to atoms — and includes a directional argument against partless atoms (anything with an east and west side has parts) and a refutation of the illusory-person analogy (even illusion requires a cause). The Sanskrit originals of all these works are lost; they survive only in Tibetan translation.

Avyākṛta (Sanskrit: अव्याकृत, "undeclared, unanswerable"; Pāli: avyākata; Tibetan: ལུང་མ་བསྟན, lung ma bstan) — The class of questions the Buddha refused to answer — the fourteen (or sometimes ten) "undeclared points" (avyākṛta-vastūni) concerning whether the world is eternal, whether the Tathāgata exists after death, and whether the self and the body are identical. The Buddha's silence was not agnosticism but a therapeutic refusal: the questions presuppose fixed entities that do not exist. Nāgārjuna's Akutobhayā Chapter 27 (Examination of Views) dissolves these questions by showing that all fourteen positions depend on either the "anterior limit" (past) or the "posterior limit" (future) and that, because all entities are empty, no speculative view can coherently arise. The dissolution is not a fifth position but the abandonment of the question-form itself. The closing verse of the Mūlamadhyamakakārikā — "He who, having taken hold of compassion, taught the excellent Dharma in order to abandon all views — to that Gautama I bow" — is addressed precisely to this: the Buddha's teaching is the medicine that cures the disease of asking.

Asaṅga (असङ्ग; Tibetan: ཐོགས་མེད, Thogs-med, "The Unobstructed") — Indian Buddhist philosopher-monk of the 4th century CE, co-founder (with his brother Vasubandhu) of the Yogācāra (Mind-Only) school, the second great philosophical school of Mahāyāna Buddhism alongside Madhyamaka. Born in Puruṣapura (modern Peshawar), Asaṅga is credited with receiving the Yogācāra teachings from the bodhisattva Maitreya in Tuṣita heaven and composing foundational treatises including the Yogācārabhūmi-śāstra (Stages of Yogic Practice), the Mahāyānasaṃgraha (Compendium of the Great Vehicle), and the Abhidharmasamuccaya. While Nāgārjuna dismantled claims to inherent existence through dialectic, Asaṅga mapped the architecture of consciousness itself — the eight consciousnesses, the ālayavijñāna (storehouse consciousness), and the transformation of cognition into awakened wisdom. His Praise of the Qualities of the Dharmakāya (Tengyur D1115) reveals the philosopher as devotee: seventeen verses of pure praise, each bowing to a different quality of the Buddha's truth body, culminating in the apophatic dissolution of all qualities into non-elaboration.

Catuṣkoṭi (Sanskrit: चतुष्कोटि, "four corners"; Pāli: catukkoṭi; also tetralemma, fourfold quadrilemma) — The logical schema in Indian philosophy consisting of four mutually exclusive possibilities with respect to any given proposition X: (1) X is; (2) X is not; (3) X both is and is not; (4) X neither is nor is not. In the Pāli Nikāyas and Chinese Āgamas, the Buddha declined to affirm any of the four standard positions regarding the post-death state of the Tathāgata — "the Tathāgata exists after death," "does not exist," "both exists and does not exist," "neither exists nor does not exist" — because all four positions are grounded in the five aggregates, which the Tathāgata has completely abandoned. The state of the awakened after death thus defies categorisation by all four horns of the quadrilemma simultaneously. Nāgārjuna systematised this structure in the Mūlamadhyamakakārikā as a dialectical method for dismantling metaphysical views: each of the four positions regarding any substantial claim — existence, causation, motion, selfhood — generates contradictions, demonstrating that no fixed nature can be coherently predicated. The catuṣkoṭi is the primary tool of the Madhyamaka deconstruction — not nihilism (which would affirm the second horn) but the refusal of all four, leaving only the wordless pointing that is śūnyatā. Tang Huyen, in a 2007 talk.religion.buddhism post, used the quadrilemma to dismantle the naive reading of parinirvāṇa: "It cannot be said that, after death, the awakened exist, do not exist, both exist and do not exist, neither exist nor do not exist. All four possibilities do not apply."

Kaccayanagotta Sutta (Pāli; Sanskrit: Kātyāyana Sūtra; Samyutta Nikāya III.132-135; Chinese Āgama: SA 262, 67a) — "The Discourse to Kaccayana." One of the most philosophically significant short suttas in the Pāli Canon, in which the Buddha formulates the middle way as a metaphysical principle rather than a practical ethic. Responding to Kaccayana's question about "right view," the Buddha teaches that the world ordinarily leans on two extremes — "it is" (existence, eternalism) and "it is not" (non-existence, annihilationism) — and that right view avoids both by attending to dependent arising instead: "This being, that is; this arising, that arises .. this not being, that is not; this ceasing, that ceases." The sutta is central to Madhyamaka philosophy: Nāgārjuna cites it as scriptural foundation for the emptiness teaching, arguing that the refusal of both eternalism (śāśvatavāda) and annihilationism (ucchedavāda) is not agnosticism but the recognition that phenomena arise and cease dependently, without fixed self-nature. Tang Huyen, in a 2007 talk.religion.buddhism analysis, insisted on the context-dependence of this teaching: the avoidance of "it is" and "it is not" is a teaching on transcendence, not a prohibition against ordinary discourse — the Buddha elsewhere explicitly promised to teach "of the real that it exists, of the unreal that it does not exist" (AN IV.36). Understanding the Kaccayanagotta Sutta requires distinguishing the transcendent mode of the teaching from the ordinary mode; conflating them produces the error of treating all Buddhist speech about existence as paradoxical disclaimer.

Samyutta Nikāya (Pāli) — "Connected Discourses." One of the five collections (nikāyas) of the Pāli Sutta Piṭaka, comprising approximately 2, suttas organised thematically in fifty-six connected groups (saṃyuttas). The collection contains some of the Buddha's most foundational teachings: the Dhammacakkappavattana Sutta (the first discourse on the Four Noble Truths), the Anattalakkhaṇa Sutta (the first discourse on non-self), and extended teachings on dependent origination, the five aggregates, and the six sense bases. The Samyutta Nikāya is a primary source for Theravāda systematic philosophy and one of the most important records of early Buddhist teaching.

Sammā Vācā (Pāli: sammā vācā; Sanskrit: samyag vāk) — "Right Speech." The third factor of the Noble Eightfold Path, grouped under the training of virtue (sīla) alongside Right Action and Right Livelihood. The Buddha's Abhaya Sutta (Majjhima Nikāya 58) gives a precise sixfold framework: only speak what is factual, true, beneficial, and well-timed — with "beneficial" and "well-timed" carrying equal weight. Words that are true but harmful at the wrong moment are still withheld; the Tathāgata "has sympathy for living beings." Ayya Khema condensed the framework to four lines: "If it is not truthful and not helpful, don't say it. If it is truthful and not helpful, don't say it. If it is not truthful and helpful, don't say it. If it is both truthful and helpful, wait for the right time." Right Speech is not merely about the speaker's intention — it extends to how we are heard, making right speech and right listening interdependent. The Dhammapada teaching on hate undergirds the whole: "Hate never yet dispelled hate. Only love dispels hate. This is the law, ancient and inexhaustible."

Visuddhimagga (Pāli) — "The Path of Purification." A comprehensive fifth-century CE compendium of Theravāda Buddhist doctrine and practice, composed by the scholar-monk Buddhaghosa at the Mahāvihāra monastery in Anurādhapura, Sri Lanka. Structured in three parts — virtue (sīla), concentration (samādhi), and wisdom (paññā) — the Visuddhimagga synthesises the entire Theravāda meditation system and doctrinal framework. It remains the most authoritative systematic treatise in Theravāda Buddhism and is essential to understanding classical Theravāda Abhidhamma, particularly the detailed analysis of consciousness, the stages of meditation, and the path to liberation.

Milindapañha (Pāli; Sanskrit: Milindapraśna) — "The Questions of Milinda." A Pāli text recording a dialogue between the Greek king Menander I (Pāli: Milinda, r. c. 155–130 BCE) and the Buddhist monk Nāgasena. Composed in stages between c. 100 BCE and c. 400 CE, the text uses the philosophical question-and-answer format (the king poses hard questions; the monk answers with analogies) to address some of Buddhism's thorniest conceptual problems: the existence of a self without transmigration, karma without a soul-carrier, personal identity across rebirth, and the status of the arhat. The chariot analogy — Nāgasena asks Milinda to find the chariot among its parts and cannot — is one of the most famous illustrations of the doctrine of non-self in any Buddhist literature. Tom Simmonds' 1991 soc.religion.eastern colophon identifies the Milindapañha as one of the texts in the tradition of thinking about the subject/object relation and the continuity of the knower.

Tathāgatagarbha (तथागतगर्भ; Chinese: 如來藏 rúláizàng) — "Womb of the Tathāgata" or "Buddha-nature." The doctrine that all sentient beings carry an innate seed or matrix of Buddhahood — obscured by defilements but never absent. Originating in Indian Mahāyāna texts such as the Tathāgatagarbha Sūtra and the Śrīmālādevī Sūtra, the teaching crystallized in East Asia into the concept of fóxìng (佛性, "Buddha-nature"), one of the most generative ideas in Chinese Buddhism. The Chan tradition's cardinal teaching — "Your Mind is the Buddha" — is a direct expression of this doctrine; the great kōan "Does a dog have Buddha-nature?" measures the student against it. The doctrine stands in creative tension with Madhyamaka emptiness: is the Tathāgatagarbha a hidden Ātman (a charge the Madhyamikas raised) or simply emptiness dynamically understood? This productive tension drove centuries of East Asian Buddhist philosophy and produced the Yogācāra-Mādhyamika synthesis.

Transmigration — The passage of a soul or consciousness through successive bodies, lives, or realms of existence. Called metempsychosis or palingenesis in the Greek philosophical tradition, saṃsāra in Hindu and Buddhist thought, and gilgul (גִּלְגּוּל) in Kabbalah. In the Hermetic creation myth (Corpus Hermeticum), soul-stuff formed by God is placed in intermediate regions and — after the souls' rebellion — imprisoned in material bodies and subjected to transmigration, with promise of eventual return. The Buddhist understanding differs fundamentally: there is no fixed soul to transmigrate; instead, a stream of consciousness continues through lives without a stable self-nature (anātman), with karma providing causal continuity. The Milindapañha addresses this paradox directly: how can there be rebirth without a self to be reborn? The lamp-flame analogy — the flame passes from wick to wick without being the same flame or a different flame — is Nāgasena's famous answer.
Lotus Sutra (Sanskrit: Saddharma Puṇḍarīka Sūtra; Chinese: 妙法蓮華經, Miàofǎ Liánhuá Jīng; Japanese: 妙法蓮華経, Myōhō Renge Kyō) — "The Sutra of the Lotus of the Wonderful Dharma." One of the most influential Mahāyāna sūtras, composed in Sanskrit between approximately the 1st century BCE and the 2nd century CE and translated into Chinese by Kumārajīva in 406 CE. The Lotus Sutra's central revelations are radical: that all sentient beings will ultimately attain Buddhahood regardless of path or capacity (the "one vehicle," ekayāna); that Śākyamuni Buddha has been enlightened for "unlimited, boundless, inconceivable, asaṃkhyeya kalpas" — not merely at Bodh Gayā 2, years ago, as was widely believed; and that the sutra itself, wherever it is kept and recited, becomes a sacred site equal to any stupa or shrine. The teaching of the "eternal Buddha" in Chapter 16 became the doctrinal foundation of Nichiren Buddhism. The sutra's famous parables — the Burning House, the Lost Son, the Physician, the Medicinal Herbs — are among the most beloved in Buddhist literature. East Asian Buddhism, particularly in China, Japan, and Korea, was shaped more by the Lotus Sutra than by any other text.

Nichiren Daishonin (日蓮大聖人, 1222–1282) — A Japanese Buddhist monk who founded the school bearing his name, declaring the Lotus Sutra the supreme teaching of the Buddha and the chanting of its title, Nam-myoho-renge-kyo, the central practice for the current age (mappō, the Latter Day of the Law). Born in Awa Province, he trained at Mount Hiei (the Tendai center) and in 1253 began teaching that all other Buddhist schools had deviated from the Buddha's true intent. His treatise Rissho Ankoku Ron ("On Securing Peace of the Land Through the Propagation of True Buddhism"), submitted to the Kamakura shogunate in 1260, argued that the calamities of his era — earthquakes, famines, epidemics — resulted from the nation's adoption of false Buddhist teachings, and predicted foreign invasion if it did not return to the Lotus Sutra. His refusal to retract brought two exiles and a near-execution. He is venerated within his school as a daishonin ("great sage") and, by some adherents, as the True Buddha of the Latter Day — an interpretation contested among Nichiren branches. His major writings include the Rissho Ankoku Ron, the Kaimoku Sho ("Opening of the Eyes"), and the Kanjin no Honzon Sho ("The Object of Devotion for Observing the Mind").

Nam-myoho-renge-kyo (南無妙法蓮華経) — The central practice of Nichiren Buddhism: the chanting of the title of the Lotus Sutra as a devotional and transformative act. Namu (from Sanskrit namas, "reverence, devotion") signifies sincere dedication; Myōhō-Renge-Kyō is the Japanese pronunciation of the Lotus Sutra's title — "The Wonderful Dharma of the Lotus Flower." Nichiren taught that the entire Buddha-dharma is contained within this title, and that chanting it sincerely in the Latter Day of the Law was the practice the Buddha had prescribed for this era. In his cosmology, the law expressed in the title is not merely the contents of a scripture but the fundamental principle of life itself — the mechanism of karma, cause and effect, and rebirth. In Nichiren Shōshū and in the lay Soka Gakkai organization, the chant is directed toward the gohonzon, the sacred mandala Nichiren inscribed. Keith Evans, posting to soc.religion.eastern in 1990, described the law as that with which consciousness "becomes one" at death — and through which, conditioned by karma, it is reborn.

Daimoku (題目) — "Title." In Nichiren Buddhism, the title of the Lotus Sutra — Nam-myoho-renge-kyo — practiced as a devotional chant. Nichiren established that chanting the daimoku was the appropriate Buddhist practice for the Latter Day of the Law (mappō), an era in which, he argued, people lack the capacity for more demanding disciplines. The daimoku is chanted before the gohonzon in daily morning and evening liturgy (gongyo) and may be chanted continuously in extended sessions. Chanting is understood to activate the inherent Buddha-nature of the practitioner, aligning their life with the fundamental law of the universe. The Nichiren tradition was notable in East Asian Buddhism for its insistence on a single, specified practice — rather than the pluralism of methods (Pure Land recitation, Zen sitting, Tantric ritual) common in Chinese and Tibetan schools.

Avīci (Sanskrit: अवीचि; Pāli: Avīci; Chinese: 阿鼻, Ābí; Japanese: 阿鼻, Abi) — "Uninterrupted" or "Without Interval." The lowest and most severe of the eight hot hells in Buddhist cosmology — the realm in which suffering is constant, with no respite between its unbearably intense torments. Beings are reborn in Avīci as a consequence of the five grave offenses (pañcānantarya-karma): killing one's mother, killing one's father, killing an arhat, shedding the blood of a Buddha, and creating schism in the saṅgha. In Nichiren Buddhism, those who die holding wrong views — specifically, reliance on Buddhist teachings the tradition regards as provisional or false — risk rebirth in Avīci. In the broader Nichiren framework, "hell" is understood not only as a cosmological realm but as a quality of life: the circumstances of rebirth shaped by unresolved karma, with Avīci representing its extreme. The term is sometimes romanized avichi in older scholarship.

Tengyur (Tibetan: བསྟན་འགྱུར, bsTan 'gyur) — "The Translated Treatises." The second great division of the Tibetan Buddhist canon, complementing the Kangyur (the translated words of the Buddha). The Tengyur contains approximately 3, texts — Indian Buddhist commentaries, treatises, hymns, and philosophical works translated into Tibetan between the 8th and 14th centuries. The standard Degé edition comprises 224 volumes. The very first text in the entire Tengyur is the Viśeṣastava ("Praise of the Distinguished One") by Udbhaṭasiddhasvāmin — a systematic praise-poem comparing the Buddha's qualities to those of the Hindu gods. The Tengyur is the commentarial heart of Tibetan scholastic Buddhism; without it, the Kangyur would be scripture without interpretation.

bsTod tshogs (Tibetan: བསྟོད་ཚོགས, bsTod tshogs) — "Collected Praises." The opening section of the Tengyur (Volume 1, ka), containing devotional hymns (stotra) by Indian Buddhist masters — among them Nāgārjuna, Mātṛceṭa, Aśvaghoṣa, Dignāga, Udbhaṭasiddhasvāmin, and Vasudhārā. These are praise poems addressed to the Buddha, the dharma, or aspects of enlightened reality, composed in Sanskrit and translated into Tibetan by the great lotsāwas (translators) of the imperial and post-imperial periods. The vast majority have never been translated into English, making this section one of the richest untapped sources of Buddhist devotional literature.

Siṃhavimokṣa (Sanskrit: सिंहविमोक्ष, Tibetan: སེང་གེ་རྣམ་གྲོལ, seng ge rnam grol) — "The Lion's Complete Liberation." A specific advanced samādhi attributed to the Buddha, in which the Awakened One rises from meditation and the world trembles with the eighteen great portents (aṣṭādaśa-mahā-nimitta). In Ratnakīrti's Yogacaturdevastotra (D1170), the Buddha enters this samādhi and by its power cuts the stream of all lower realms across the ten directions, equalizing the lot of gods and humans. The name evokes the lion's fearless rising from rest — a common metaphor for the Buddha's emergence from absorption.

Svabhāvikakāya (Sanskrit: स्वाभाविककाय, Tibetan: རང་བཞིན་སྐུ, rang bzhin sku) — "The Essential Body" or "Nature Body." In Mahāyāna Buddhism, the fourth or fifth kāya (body) of a buddha, representing the fundamental nature or essence that underlies the three more commonly discussed bodies (dharmakāya, saṃbhogakāya, nirmāṇakāya). The svabhāvikakāya is the unity of all the other kāyas — the indivisible buddha-nature that is not a separate manifestation but the ground from which all manifestations arise. In Ratnakīrti's Yogacaturdevastotra (D1170), it is described as "firm" while the gods make offerings and the single body appears as many to all beings simultaneously.
Spring yig (Tibetan: སྤྲིང་ཡིག, sPring yig) — "Epistles" or "Letters." A section of the Tengyur containing verse letters and advisory poems by Indian Buddhist masters, including Nāgārjuna, Mātṛceṭa, Aśvaghoṣa, and lesser-known poets such as Rāmendra. Unlike the praise poems of the bsTod tshogs, which are addressed to the Buddha, the epistles are addressed to kings, students, or general audiences — practical wisdom in verse form. The section includes some of the most intimate and direct poetry in the Tengyur: not theological argument but personal counsel on impermanence, ethics, and the conduct of life. The first text from this section translated into English is Rāmendra's Anityārtha-parikathā (D4174), five verses on the meaning of impermanence.

Ṣaḍdanta (Sanskrit: षड्दन्त, "six-tusked"; Tibetan: མཆེ་བ་དྲུག་པ, mche ba drug pa) — The six-tusked elephant, a celebrated jātaka (past-life story) of the Buddha. In this life, the bodhisattva was born as a magnificent white elephant with six tusks. When a jealous queen sent a hunter to kill him and bring back the tusks, the elephant — recognizing the hunter's arrow as the fruit of past karma — calmly pulled out his own tusks with his trunk and offered them. The Ṣaḍdanta jātaka is one of the most frequently depicted scenes in Buddhist art, particularly in the reliefs of Sanchi, Bharhut, and Ajanta. In the Lotus Sutra, the bodhisattva Samantabhadra arrives on a six-tusked white elephant. Vasudhārā's Praise of the Buddha (Tengyur D1114) invokes the six-tusked birth as one of the Buddha's "difficult deeds."

Sārthavāha (Sanskrit: सार्थवाह, "caravan-leader"; Tibetan: དེད་དཔོན, ded dpon) — An epithet for the Buddha as the one who leads beings safely through the desert of saṃsāra, as a caravan-master leads travelers through dangerous wilderness to their destination. The metaphor evokes the ancient Indian trade routes, where a skilled and experienced leader was the difference between life and death for the caravan. In Buddhist literature, the sārthavāha embodies all the qualities needed for the journey — knowledge of the path, compassion for the travelers, and the courage to enter the wilderness repeatedly for others' sake.

Lotsāwa (Tibetan: ལོ་ཙཱ་བ, lo tsā ba; from Sanskrit locchāva or locana, "eye/translator") — "Translator." The title given to Tibetan scholar-monks who traveled to India and Kashmir to study Sanskrit and translate Buddhist texts into Tibetan. The lotsāwas were the essential bridge between Indian Buddhist civilization and Tibet — without them, the vast canon of Indian Buddhist philosophy, hymns, and commentaries would have remained inaccessible. The greatest of the early lotsāwas include Vairocana (8th century), Rinchen Zangpo (958–1055), and Marpa Lotsāwa (1012–1097). Rinchen Zangpo, the "Great Reviser-Translator" (zhu chen gyi lo tsā ba), was sent by the King of Guge to Kashmir and is credited with over 150 translations — including the Sarvajñamaheśvarastotra (D1111) in the Tengyur's Collected Praises. The institution of the lotsāwa was so central to Tibetan Buddhist civilization that the word itself became a term of the highest respect, roughly equivalent to "master translator" in the European humanist tradition.

Maheśvara (Sanskrit: महेश्वर, "Great Lord"; Tibetan: དབང་ཕྱུག་ཆེན་པོ, dbang phyug chen po) — Primarily a title of Śiva in Hinduism, denoting supreme lordship over the cosmos. In Buddhist polemical literature, the title is reclaimed for the Buddha — the "true" Great Lord who possesses all the attributes Śaiva devotees ascribe to Śiva. The Sarvajñamaheśvarastotra ("Praise of the Omniscient Great Lord," Tengyur D1111) by Udbhaṭasiddhasvāmin — a Brahmin lay Buddhist uniquely positioned to speak across traditions — systematically appropriates every major Śaiva attribute for the Buddha: the skull-cup becomes loving-kindness, the sacred ash becomes compassion, the crescent moon becomes moral discipline, the bull-mount becomes the Mahāyāna, the trident becomes wisdom, and the charnel ground becomes the field of emanation. The title Maheśvara thus became a site of inter-religious dialogue in medieval India, with both Buddhist and Hindu authors claiming it as properly belonging to their respective supreme figure.

Mātṛceṭa (Sanskrit: मातृचेट; Tibetan: མ་ཏྲི་ཙི་ཊ, ma tri tsi ṭa) — One of the most celebrated Buddhist poets of ancient India, traditionally identified as a student of Āryādeva in the Madhyamaka philosophical lineage, active in approximately the 2nd–3rd century CE. Mātṛceṭa is renowned for two great praise-poems to the Buddha: the Śatapañcāśatka ("One Hundred and Fifty Verses of Praise," Tengyur D1147) and the Catuḥśatakastotra ("Four Hundred Verses of Praise," Tengyur D1138), both preserved in the Tibetan Tengyur. His shorter hymns — including the Ekottarikastava ("Praise Expanding from One," D1141), a numerical praise ascending from one to ten — reveal a poet who could teach the entire breadth of Buddhist doctrine through the architecture of devotion. His Miśraka-stotra ("The Mixed Praise," D1150) is his longest single work in the Tengyur — thirteen chapters praising the Buddha through every lens: causes, incomparability, wonders, body, compassion, speech, teaching, aspirations, path, difficult deeds, skillful means, and freedom from debt. The poem’s architecture moves from what the Buddha is to what the Buddha does to what the Buddha has accomplished, making it a complete devotional theology. His Kaliyukaparikathā ("Discourse on the Age of Strife," D4170), preserved in the Epistles section, is a 25-verse apocalyptic prophecy on the degradation of the dharma in the Kali Yuga — when monks abandon the vinaya, kings turn to plunder, and the teachings fragment — remarkable for combining cosmological pessimism with an unshaken call to take refuge. The Chinese pilgrim Yijing (7th century) reported that Mātṛceṭa's praise-poems were still recited daily in Indian monasteries, and that any monk who could not recite the Śatapañcāśatka was "not yet considered a learned person."

Śatapañcāśatikā-stotra (Sanskrit: शतपञ्चाशतिका-स्तोत्र; Tibetan: བརྒྱ་ལྔ་བཅུ་པ་ཞེས་བྱ་བའི་བསྟོད་པ, brgya lnga bcu pa, "Hymn in One Hundred and Fifty Verses") — The most celebrated devotional poem of the Indian Buddhist tradition, attributed in the Tibetan colophon to the great Brahmin master Aśvaghoṣa but assigned by modern scholarship to Mātṛceṭa (c. 2nd century CE). Once recited daily across the entire Buddhist world — from Gandhāra to China — and inscribed on monastery walls. The Chinese pilgrim Yijing (7th century) reported that any monk who could not recite it was "not yet considered a learned person." The poem's 152 verses across thirteen chapters trace a complete arc of praise: from the reasons to praise the Buddha, through his incomparability, his wonders, his body, compassion, speech, teaching, aspirations, the path he entered, his difficult deeds, his skillful methods, to the final chapter arguing that even in parinirvāṇa the Buddha owed the world nothing. The Sanskrit survives only in fragments discovered at Turfan and in Tibetan translations in the Degé Tengyur (D1147). First English translation from the Tibetan by the Good Works Project (2026).

Miśraka-stotra (Sanskrit: मिश्रकस्तोत्र; Tibetan: སྤེལ་མར་བསྐོད་པ, spel mar bstod pa, "The Mixed Praise") — A devotional praise-poem by Mātṛceṭa (2nd–3rd century CE), preserved in the Degé Tengyur (D1150). The longest single work of Mātṛceṭa in the Tibetan canon, comprising thirteen chapters that praise the Buddha through every conceivable lens: his causes and conditions, incomparability, miraculous deeds, physical body, compassion, speech, teaching, aspirations, path, difficult deeds, skillful means, and freedom from debt. The title "mixed" (miśraka) refers to the diversity of subjects — where the Śatapañcāśatka praises the Buddha in sustained devotional mode, the Miśraka-stotra is encyclopedic, moving from the golden skin and webbed fingers of the physical body to the metaphysics of the teaching voice that reaches all beings simultaneously. Chapter VII (Praise of Speech) is particularly remarkable: thirty verses on how the Buddha’s voice adapts to every hearer, each being receiving the teaching in their own language and at their own level of understanding. The Sanskrit original is lost. The Tibetan translation was rendered by Kumārakalaśa and the monk Sonam Zangpo (བསོད་ནམས་བཟང་པོ). First English translation by the Good Works Project (2026).

Devātiśaya (Sanskrit: देवातिशय, "surpassing the gods"; Tibetan: ལྷ་ལས་ཕུལ་དུ་བྱུང་བ, lha las phul du byung ba) — A genre and concept in Indian Buddhist literature in which the Buddha is praised by demonstrating his superiority over the Hindu gods — not through combat or cosmic power, but through the quality of his realization. The Devātiśayastotra ("Praise of the One Surpassing the Gods," Tengyur D1112) by Śaṅkarasvāmin exemplifies this mode: over twenty-one verses, the poet argues that the Buddha surpasses Brahmā because he is free from pride, Viṣṇu because he sustains beings through dharma rather than cosmic force, Śiva because his third eye is wisdom rather than destruction, Kāma because he conquers desire without being conquered by it, the Sun because his light dispels ignorance rather than merely darkness, and the Moon because his coolness extinguishes the three fires of greed, hatred, and delusion. The devātiśaya mode is not merely competitive — it represents a philosophical claim that ethical and cognitive transformation outranks cosmological power. The genre was particularly potent in medieval India, where Buddhist authors shared a cultural vocabulary with Hindu devotees and could argue on common ground.

Tīrthika (Sanskrit: तीर्थिक, "ford-maker"; Tibetan: མུ་སྟེགས་པ, mu stegs pa) — In Buddhist literature, a non-Buddhist religious teacher or adherent — literally "one who makes or uses a ford," referring to teachers who claim to show a crossing-point from suffering to liberation but whose path, from the Buddhist perspective, does not lead to full awakening. The term is used technically, not as a slur: it designates the teachers of the "ninety-six views" (mu stegs bcu drug) encountered in Indian religious debate — Brahmanical, Jain, Sāṃkhya, Vaiśeṣika, and other schools. The Tibetan translation mu stegs pa ("boundary-ford person") preserves the metaphorical structure. In the Tengyur praise literature, the tīrthikas are typically those whose teachings are "surpassed" (atiśaya) by the Buddha's realization — not defeated in battle but shown to be incomplete. The concept reflects the Indian Buddhist engagement with religious pluralism: other teachers are acknowledged as sincere seekers who have found something real, but their fords do not reach the far shore.

Thirty-Five Buddhas of Confession (Sanskrit: pañcatriṃśad-buddha; Tibetan: ལྟུང་བཤགས་ཀྱི་སངས་རྒྱས་སུམ་ཅུ་རྩ་ལྔ, ltung bshags kyi sangs rgyas sum cu rtsa lnga) — The thirty-five buddhas invoked in the Confession of Downfalls (Triskandhadharmasūtra, Toh 284), one of the most widely practiced devotions in Tibetan Buddhism. The practitioner recites each of the thirty-five names while performing full-length prostrations, confessing negative actions and purifying karma. The list begins with Śākyamuni and includes buddhas such as Vajragarbhapramardin ("Thoroughly Vanquishing through Diamond Essence"), Ratnārcis ("Precious Radiance"), Nāgeśvararāja ("King of the Nāga Lords"), and Merukūṭarāja ("King of Mount Meru"). Each name encodes a quality of awakened activity. Mātṛceṭa's Sugatapañcatriṃśataratnanāmamālāstotra ("Praise of the Thirty-Five Sugatas, Adorned with Precious Names," Tengyur D1142) expands each bare name into a four-line verse of devotional poetry, transforming a liturgical list into a hymn.

Ṣoḍaśa Sthavira (Sanskrit: षोडश स्थविर, "Sixteen Elders"; Tibetan: གནས་བརྟན་བཅུ་དྲུག, gnas brtan bcu drug) — The sixteen great disciples of the Buddha who vowed to remain in the world, not entering final nirvāṇa, in order to protect and preserve the Dharma until the coming of Maitreya. Each elder was assigned a specific region and a retinue of arhats: Aṅgaja dwells on Mount Kailāsa with 1,300; Ajita on the Crystal Mountain with 100; Vanavāsin in Saptaparṇa Cave with 1,400; Mahākalika on Tamradvīpa with 1,100; Vajrīputra in Siṃhaladvīpa with 1,000; Śrībhadra in Yamunadvīpa with 900; Kanakavatsa in Kashmir with 500; Kanakabhāradvāja in the Western Continent with 700; the arhat Bakula in Uttarakuru with 900; Rāhula in Priyaṅgudvīpa with 1,100; Cūḍapanthaka in the Vulture Peak with 1,600; Piṇḍolabhāradvāja in the Eastern Continent with 1,000; Panthaka in the Heaven of the Thirty-Three with 900; Nāgasena on Mount Urumunda with 1,200; Gopaka on Mount Bihula with 1,400; and Abheda on the Himalaya with 1,000. The tradition of the Sixteen Elders became central to East Asian Buddhism, where their images adorn temple walls and their invocation forms a key part of monastic ritual. The Saṃghamantra (D4198) preserves the fullest Tibetan liturgical catalogue of the sixteen, embedded in the ritual of inviting the Saṅgha to accept offerings.

Saṃghamantra (Sanskrit: संघमन्त्र, "Invitation of the Saṅgha"; Tibetan: དགེ་འདུན་ལ་མགྲོན་གཉེར་བ, dge 'dun la mgron gnyer ba) — A liturgical text prescribing the ritual of formally inviting the Buddhist Saṅgha to accept the offerings of the faithful. The Invitation of the Sangha (D4198), preserved in the Epistles section of the Degé Tengyur (Volume 173, folios 149b–152b), opens with a prophecy attributed to Elder Priyamitra concerning the duration of the Buddha's teaching, then catalogues the Sixteen Elders (ṣoḍaśa sthavira) who remain in the world to guard the Dharma, and concludes with the complete ritual sequence: the invitation formula, the offering, verses of apology and homage, dedication of merit, a maṇḍala offering, and the farewell. The text exemplifies a genre of Buddhist liturgical literature that bridges doctrinal content (the prophecy, the doctrine of merit) with practical ceremonial instruction. The ritual's animating logic is that offerings to the Saṅgha — especially the arhat Saṅgha that includes the Sixteen Elders — generate merit of immeasurable scope, because the field of merit (puṇyakṣetra) is proportional to the spiritual attainment of the recipient.

Ambedkarite & Navayana Terms

Navayana (नवयान, "New Vehicle") — The name Dr. B.R. Ambedkar gave to his reinterpretation of Buddhism, positioning it as a third vehicle alongside Theravada and Mahayana. Navayana retains the Buddha's ethical core — the Four Noble Truths, the Eightfold Path, the emphasis on prajna, sila, and karuna — while rejecting karma as cosmic accounting, rebirth as metaphysical fact, and monasticism as the primary vehicle of liberation. Ambedkar's masterwork The Buddha and His Dhamma (1957) is the Navayana's foundational text. The largest mass conversion in Buddhist history.

Dalit (दलित, "broken" or "ground down") — The self-chosen identity term for communities formerly classified as "untouchable" in the Hindu caste system. Popularized by the Dalit Panthers in the 1970s, the word's roots trace to the Marathi reformer Jyotirao Phule in the nineteenth century. The term transforms the fact of oppression into an identity of resistance. In the context of the Buddhist movement, "Dalit Buddhist" specifies both the social constituency (the formerly untouchable communities) and the theological orientation (Ambedkar's Navayana interpretation). The 2011 Indian census recorded 8.4 million Buddhists; estimates of the actual Dalit Buddhist population range to fifty million or more.

Deekshabhoomi (दीक्षाभूमि, "land of initiation") — The site in Nagpur, Maharashtra, where Dr. B.R. Ambedkar led approximately 600, Dalits in conversion to Buddhism on October 14, 1956. Now a major Buddhist pilgrimage site, featuring a massive stupa completed in 2001. The annual Dhammachakra Pravartan Din (October 14) at Deekshabhoomi draws millions of pilgrims and is one of the largest Buddhist gatherings in the world.

Twenty-Two Vows — The supplementary vows composed by Dr. B.R. Ambedkar for the 1956 Nagpur conversion, taken in addition to the traditional Three Refuges and Five Precepts. Unlike any existing Buddhist liturgy, the vows explicitly reject Hindu deities, ancestral rites, and the doctrine of the Buddha as an avatar of Vishnu, while affirming the convert's social rebirth. The vows function as a hybrid of Buddhist refuge, legal declaration, and revolutionary manifesto — criticized by traditional Buddhists as sectarian, praised by Ambedkarite scholars as the most honest conversion document in religious history.

Thirteen Types of Virtue (kuśala/dge ba) — Vasubandhu's systematic taxonomy of virtue in D4103 verse 11, identifying thirteen ways in which something qualifies as virtuous: (1) by nature (svabhāva) — the ten wholesome mental factors beginning with faith; (2) by association — dharmas concomitant with those factors; (3) by subsequent connection — their habitual impressions (vāsanā); (4) by motivation — bodily and verbal actions they motivate; (5) by obtaining birth — ripened results of habituating to virtue; (6) by ultimate truth — suchness (tathatā); (7) by method — the four conditions of spiritual development; (8) by benefit — benefiting beings through the four means of gathering; (9) by taking up — merit from generosity, discipline, or meditation leading to fortunate rebirth; (10) by making foremost — offerings in sacred presence; (11) by antidote — six types of counteractive forces against affliction and obscuration; (12) by complete pacification — the stages of nirvāṇa; (13) by concordant cause — clairvoyances and supramundane attainments. This is the most comprehensive Abhidharma definition of virtue in the Tengyur.

Four Ends (མཐའ་བཞི/caturanta) — The four marks of impermanence taught in a verse the Buddha spoke to those attached to worldly enjoyments: (1) all that is accumulated ends in exhaustion (bsags pa kun mtha' zad pa); (2) the end of the high is falling (mthon po'i mtha' ni ltung ba); (3) the end of gathering is separation ('du ba'i mtha' ni 'bral ba); (4) the end of living is dying ('tsho ba'i mtha' ni 'chi ba). Vasubandhu (D4103, verse 20) maps these four onto the objects of human striving (possessions, dwellings, companions, life itself), onto the Buddha's teaching on craving, and onto the three realms of Buddhist cosmology — the peak of the high being the peak of existence (bhavagra), the topmost station of the formless realm, which itself falls. The rhetorical conclusion is unanswerable: if even these four are impermanent, what in the world could remain?

Three Bases of Giving (sbyin pa'i gzhi gsum) — Vasubandhu's Abhidharma analysis of the three conditions that must all be present for true generosity to arise: (1) non-attachment (alobha/ma chags pa) to the thing given — if you cling to the object, you will not release it; (2) non-aversion (adveṣa/zhe sdang med pa) toward the recipient — even if unattached to the thing, aversion toward the person prevents giving; (3) non-delusion (amoha/gti mug med pa) about cause and result — even if unattached and unaverse, if you do not understand that giving produces great enjoyment as its fruit, you will not give. The three form a nested logical proof: each poison is independently sufficient to prevent generosity, and only freedom from all three simultaneously enables it. The analysis appears in D4103, verse 17.

Three Wisdoms (Skt. śrutamayī-prajñā, cintāmayī-prajñā, bhāvanāmayī-prajñā; Tib. thos bsam sgom gsum gyi shes rab) — The threefold classification of wisdom in Buddhist Abhidharma: wisdom born of hearing (studying the teachings), wisdom born of contemplation (analytical reflection on what was heard), and wisdom born of meditation (direct experiential cultivation). Vasubandhu maps these to the three activities of a monk who never falls from the Dharma: delighting in the Dharma produces hearing-wisdom, contemplating the dharmas produces contemplation-wisdom, and being mindful of the dharmas produces meditation-wisdom (D4103, verse 7).

Bijak (बीजक, "the seedling" or "the account book") — The primary scripture of the Kabir Panth in eastern India, containing the compositions of the poet-mystic Kabir (c. 1440-1518). Organized into three sections: Ramaini (extended verses), Shabda (short poems), and Sakhi (couplets or dohas). The sakhi form — compressed two-line observations carrying full theological weight — is the most quoted and remembered genre in Hindi literature. Three distinct manuscript traditions (Rajasthani, Punjabi, and Eastern) preserve different versions of Kabir's compositions, reflecting centuries of oral transmission.

Li yul (ལི་ཡུལ) — The Tibetan name for the kingdom of Khotan (also written Hetian in Chinese), a Buddhist oasis kingdom on the southern branch of the Silk Road in what is now Xinjiang, China. Li was the dominant Buddhist kingdom of Central Asia from roughly the 3rd century BCE to the 11th century CE, when it fell to Turkic Muslim conquest. The Tibetan Buddhist canon preserves multiple prophetic chronicles of Li, including the Li yul lung bstan pa (D4202) and the Prophecy of Arhat Sanghadeva (D4201). Founded according to tradition by Prince Sa-nu (Indian) and Minister Yasha, making it a meeting point of Indian and Chinese civilization.

Sa-nu (ས་ནུ) — "Earth-Breast." The legendary Indian founder-prince of Khotan. According to the Li yul lung bstan pa, Sa-nu was the son of King Dharma-Asoka's queen, who conceived after seeing Vaisravana's Son in the sky. Asoka, jealous of the astrologers' prophecy that the boy would be a great king, ordered him abandoned. A breast emerged from the earth to nurse him — hence the name. He was later adopted by the Emperor of China as the thousandth son, eventually leading an army west to found Khotan with Minister Yasha.

Gandi (གཎྜཱི) — A wooden sounding board or ceremonial gong used in Buddhist monasteries to summon the community for assemblies, meals, or teachings. In the founding legend of Khotan, King Vijayasambhava vowed not to strike the gandi until the Tathagata himself placed it in his hand — whereupon Manjusri manifested as the Buddha and presented it, and the sound continued for seven days.

Kong-jo (ཀོང་ཅོ) — The Chinese princess who came to Tibet with six hundred attendants, identified in the Li yul lung bstan pa as a bodhisattva. Her arrival strengthened Buddhism among the Tibetan kings. She fell ill with a plague of boils and on her deathbed donated all her wealth and servants to the Three Jewels. Her attendants were all ordained. After her death, the plague spread and the Tibetan ministers blamed the monks, leading to their expulsion.

Prabhūtaratna (प्रभूतरत्न, Tibetan: རིན་ཆེན་མང, rin chen mang) — "Many Jewels" or "Abundant Treasures." A Buddha from the distant past who appears in the Lotus Sutra (Saddharmapuṇḍarīka), where his stupa rises from the earth and he shares his seat with Sakyamuni as witness to the teaching. In the Li yul lung bstan pa (D4202), the undecayed original relics of Prabhutaratna are said to have been installed in the Bro-tir temple in Khotan by King Vijaya-dharma, where they remain to the present day alongside relics of the seven Tathagatas.

Nolé (ནོ་ལེ) — A Khotanese term meaning "sacred drama" or "religious performance." According to the Li yul lung bstan pa, the first nolé in Khotan was arranged by the master Samantasiddhi, who ascended to the Heaven of the Thirty-Three and persuaded the gods to descend to Sang-tir to enact the Buddha's past-life deeds of generosity. The divine music drew the entire court of King Vijaya-dharma against his orders, leading to the reconciliation of the estranged royal brothers Don-dros and Vijaya-dharma. An annual nolé festival was established on the seventh and eighth of the first autumn month, continuing to the author's time.

Bhavasamkrāntiṭīkā (भवसंक्रान्तिटीका, Tibetan: སྲིད་པ་འཕོ་བའི་ཊི།ཀ, srid pa 'pho ba'i ṭīka) — "Commentary on the Transference of Existence." A Madhyamaka commentary preserved in the Degē Tengyur (Toh 3841), attributed to Maitreyanātha (Byams pa mgon po). The text systematically glosses all five chapters of Nāgārjuna's Bhavasamkrānti (D3840) — on the nature of reality, the selflessness of the aggregates, wisdom, skillful means, and the two truths — enriching the root text's compressed arguments with vivid examples (rat-poison dormant until thunder, lotuses in clear water, fire from flint, a scale tipping as the seed ceases and the sprout arises) and extensive sūtra citations from the Laṅkāvatāra, the Samādhirāja, the Śālistamba, the DaŚabhūmika, and others. The commentary develops a detailed exposition of the six perfections within its treatment of skillful means (Chapter Four), and its treatment of the two truths (Chapter Five) synthesizes the entire Madhyamaka path. The Sanskrit original is lost; the Tibetan was translated by Dru Tön Chung at the instruction of Paṇḍita Candrakumāra. No previous English translation is known to exist.

Maitreyanātha (मैत्रेयनाथ, Tibetan: བྱམས་པ་མགོན་པོ, byams pa mgon po) — "Lord Maitreya" or "Protector of Loving-Kindness." The author of the Bhavasamkrāntiṭīkā (D3841), a commentary on Nāgārjuna's Bhavasamkrānti. The colophon identifies the author as ācārya Byams pa mgon po — a name evoking the bodhisattva Maitreya but referring to a historical Indian Buddhist scholar. The name Maitreyanātha is borne by multiple figures in the Indian Buddhist tradition, most famously the fourth-century author associated with the five treatises of the Yogācāra school (Byams chos lnga). The author of D3841 is likely a later figure — the commentary's Madhyamaka orientation and its association with the translator Candrakumāra suggest a scholar active in the later Indian Buddhist period. The Sanskrit reconstruction of the name follows standard convention: byams pa = Maitreya, mgon po = nātha.

Candrakumāra (चन्द्रकुमार, Tibetan: ཟལ་བ་གཞོན་ནུ, zla ba gzhon nu) — "Moon Youth" or "Young Moon." An Indian paṇḍita who oversaw the Tibetan translation of Maitreyanātha's Bhavasamkrāntiṭīkā (D3841). The colophon states that the text was translated by the Tibetan translator Dru Tön Chung (Bru ston chung) "at the instruction of" (man ngag gis) the paṇḍita Candrakumāra — indicating that the Indian scholar directed the translation process, likely providing oral explanation of the Sanskrit while the Tibetan translator rendered it into Tibetan. This collaborative method was standard in the Tibetan translation tradition.

Śāstragāthārthasaṃgraha (བསྟན་བཅོས་ཀྱི་ཚིགས་སུ་བཅད་པའི་དོན་བསྡུས་པ) — "Concise Meaning of the Verses from Treatises." A commentary by Vasubandhu (D4103 in the Degé Tengyur) on his own Collection of Verses from Treatises (D4102). The commentary systematically explains each of the twenty-five compiled verses, identifying their cosmological and philosophical referents. Found in the Abhidharma section of the Tengyur.

Cakravāla (འཁོར་ཡུག་ཆེན་པོ, 'khor yug chen po) — The great iron enclosing ring that forms the boundary of the Buddhist cosmological world-system. In the Abhidharma cosmology, the world-system is enclosed within concentric rings of mountains, with Mount Meru at the center and the Cakravāla forming the outermost barrier. Referenced in Vasubandhu's commentary on D4102 as the farthest extent one might search for someone comparable to the Buddha.

Paranirmitavaśavartin (གཞན་འཕྲུལ་དབང་བྱེད, gzhan 'phrul dbang byed) — "Lord of Others' Emanations." The highest of the six heavens in the desire realm (kāmadhātu) of Buddhist cosmology. The beings there enjoy pleasures created by others. Māra, the tempter, is often said to reside in this heaven. Listed in D4103 among the supreme gods who nonetheless cannot compare to the Buddha.

Puṇya-kriyā-vastu (पुण्यक्रियावस्तु, Tibetan: བསོད་ནམས་བྱ་བའི་དངོས་པོ, bsod nams bya ba'i dngos po) — "Bases of Meritorious Action." The three foundations from which merit arises in Buddhist soteriology: (1) dāna-maya (from generosity), (2) śīla-maya (from discipline), and (3) bhāvanā-maya (from meditation). In Vasubandhu's commentary (D4103, verse 12), each base has a primary fruit — generosity yields great wealth, discipline yields higher rebirth, meditation yields liberation — though each can also produce the others' fruits. Two interpretations of "arising from" are given: causal (as life arises from food) and essential (as a vessel arises from clay). The merit arising from generosity is further distinguished by eight progressive causes that magnify its fruit: the field (recipient's qualities), the object (quality of the gift), mental attention (intensity of faith), intention (aspiration toward nirvana), additional accompaniment (discipline alongside giving), the support (the giver's meditative attainment), habituation (repeated practice), and the multitude (inspiring others to give, generating merit in multiple mindstreams). This systematic analysis of merit's causes became foundational in Abhidharma ethics and remains central to Buddhist lay practice.

Oḍḍiyāna (ཨོ་ཊེ, o Te; Sanskrit: Uḍḍiyāna) — A historical Buddhist kingdom in the Swat Valley of present-day Pakistan, regarded in Vajrayāna tradition as the birthplace of tantra and the home of Padmasambhāsava (Guru Rinpoche). The region was a major centre of Buddhist learning and tantric practice from the 5th through 8th centuries. In the Tibetan Buddhist literary tradition, Oḍḍiyāna appears as a land of vidyādharas (knowledge-holders) and siddhas (accomplished masters). Hariśadeva's devotional geography (D1168) lists Oḍḍiyāna alongside Kashmir, China, Siṃhala, Sindhu, Nepal, and Kāmarūpa as one of the Buddhist lands beyond India whose stūpas merit homage.

Vidyādhara (विद्याधर, Tibetan: རིག་འཛིན, rig 'dzin) — "Knowledge-holder." In Buddhist cosmology and tantric literature, a class of accomplished beings who have attained mastery of specific mantras, dhāraṇīs, or tantric practices. Vidyādharas occupy a liminal position between the human and divine realms — they possess supernatural powers (flight, transformation, longevity) gained through practice rather than birth. In the Vajrayāna tradition, the term also denotes specific stages of tantric realization. Hariśadeva's stūpa hymn (D1168) lists "the site of accomplished vidyādharas" among the sacred places deserving prostration, placing human spiritual achievement alongside the divine abodes of Brahmā, Viṣṇu, and Paśupati.

Sapta-Buddha (सप्तबुद्ध, Tibetan: སངས་རྒྱས་བདུན, sangs rgyas bdun) — "The Seven Buddhas." The lineage of seven fully awakened buddhas recognized in Mahāyāna Buddhism as having appeared in the current world-cycle: Vipaśyin (རནམ་པར་གཟིགས), Śikhin (གཙུག་ཏོར་མངའ་བ), Viśvabhū (ཐམས་ཅད་སྐྱོབ་པ), Krakucchanda (འཁོར་བ་འཇིག), Kanakamuni (གསར་ཐུབ), Kāśyapa (འོད་སརུངས), and Śākyamuni (ཤ་ཀྱ་ཐུབ་པ). The first three belong to a previous cosmic age; the latter four, including the historical Buddha, appeared in the present Fortunate Aeon (bhadrakalpa). Each buddha is associated with a specific tree of awakening, a specific number of chief disciples, and a specific lifespan. The Sapta-Tathāgata-stotra (D1165 in the Degé Tengyur) devotes a verse to each, praising their individual qualities before culminating in a universal dedication of merit. The seven-buddha schema establishes that Śākyamuni is not an anomaly but part of an ongoing series of awakenings — and that Maitreya, the eighth, is yet to come.

Udumbara (उडुम्बर, Tibetan: ཨུ་དུམ་བ་ར, u dum ba ra) — The flower of the fig tree Ficus racemosa, which in Buddhist literature symbolises extreme rarity. The udumbara is said to bloom only once every three thousand years — or, in some traditions, only when a buddha appears in the world. The Sapta-Tathāgata-stotra (D1165) uses the simile to describe the rarity of encountering a buddha’s teaching: even hearing a tathāgata’s name is as rare as seeing the udumbara flower. The image recurs across Buddhist literature — the Lotus Sūtra, the Divyavadāna, and many Tibetan texts employ it as a standard marker of preciousness beyond ordinary measure. The udumbara is not mythical: the fig tree itself is common across South Asia, but its flowers are enclosed within the fruit and invisible to the casual observer — a botanical fact that deepens the metaphor.

Candragomin (Sanskrit: घन्द्रगोमिन्; Tibetan: ཙནྨདྲ་གོ་མི) — One of the greatest poet-scholars of Indian Buddhism (5th–6th century CE). A layman and grammarian whose Cāndravyākaraṇa rivaled Pāṇini’s grammar, Candragomin was also a dramatist who brought Buddhist devotion into the high literary form of Sanskrit drama. His Lokānanda (“Play of Universal Joy”) and Śiśyalekha (“Letter to a Student”) survive in Tibetan translation and are cited in every history of Indian Buddhist literature.

Lokānanda (Sanskrit: लोकानन्द; Tibetan: འཇིག་རྟེན་ཀུན་དུ་དགའ་བ) — “The Play of Universal Joy,” a five-act Buddhist drama (nāṭaka) by Candragomin. It tells the story of Prince Cūḍāmaṇi (“Crest-Jewel”), a bodhisattva who renounces everything — wealth, wife, son, his own body, and the magical crest-jewel from his crown — for the welfare of all beings. A Jātaka (past-life story of the Buddha) in dramatic form, it follows the classical Sanskrit nāṭaka structure with benediction, prologue, and five acts of mixed verse and prose. The Sanskrit original survives only in fragments; the Tibetan translation in the Degē Tengyur (Toh. 4153) is the most complete witness.

Nāṭaka (Sanskrit: नाटक) — A type of Sanskrit drama, one of the ten major forms of dramatic composition (daśarūpaka). The nāṭaka typically features a royal hero and a well-known plot drawn from epic, legend, or scripture, performed in a mix of verse and prose with multiple acts. Distinguished from the prakīrṇa (one-act play) and the prahasana (farce). Buddhist nāṭakas like Candragomin’s Lokānanda and Harsha’s Nāgānanda adapted the Brahmanical dramatic tradition for dharmic purposes.

Śiṣyalekha (Sanskrit: शिष्यलेख; Tibetan: སློབ་མ་ལ་སྤྲིངས་པའི་སྤྲིང་ཡིག, slob ma la springs pa’i spring yig) — "Letter to a Student." A verse epistle by Candragomin (Toh. 4183 in the Degé Tengyur), written to his student Ratnakīrti who had abandoned monastic discipline and taken up with a princess. The letter follows the Indian Buddhist epistolary tradition established by Nāgārjuna’s Suhṛllekha, moving from lavish praise of the Buddha’s qualities through vivid depictions of impermanence, aging, death, the sufferings of the six realms (including extended descriptions of the hell realms), to culminate in the bodhisattva ideal — the one who enters the worst suffering joyfully for the sake of all beings. Two Indian commentaries survive: by Prajñākaramati and by Vairocanarakṣita. The Tibetan translation was made by the Indian scholar Sarvajñādeva and the great translator Paltsek Rakṣita.

Angulimala (སོར་མོའི་ཕྲེང་བ, Skt. Aṅgulimāla) — "Garland of Fingers." A brahmin's son who, deceived by his teacher into believing that killing would become dharma, murdered 999 people and wore a necklace of their fingers. He was later ordained by the Buddha and attained arhatship. In the Letter to a Friend commentary (D4190), he is cited alongside Nanda and Ajatashatru as proof that even the most heedless beings can be transformed through later heedfulness.

Posadha (གསོ་སབྱོང, Skt. Poṣadha/Uposatha) — The eight-limbed observance for Buddhist laypeople. Observed for a single day, it consists of abstaining from killing, stealing, sexual misconduct, lying, intoxicants, eating after midday, high beds, and songs/dancing/perfumes. Mahamati's commentary explains that since constant celibacy is difficult for householders, even a single day of pure conduct following the arhat's discipline produces rebirth among the desire-realm devas.

Suhṛllekha (བཤེས་པའི་སྤྲིང་ཡིག, Skt. Suhṛllekha) — "Letter to a Friend." One of the most beloved Buddhist texts in Asia — a personal letter from Nāgārjuna to King Udayin (or Gautamīputra) condensing the entire Buddhist path into 123 verses. Memorised and chanted across the Tibetan, Chinese, and Mongolian Buddhist worlds. The Dege Tengyur preserves the Tibetan translation by Indian paṇḍita Sarvajñadeva and Tibetan translator dPal-brtsegs (Pal-tsek). Mahamati's Clear Words (D4190) is the only surviving Indian commentary that explains it verse by verse.

Sarvadurgatipariśodhana (सर्वदुर्गतिपरिशोधन, Tibetan: ངན་སོང་སྦྱོང, ngan song sbyong) — "Purifier of All Evil Destinies." A Buddha invoked in Buddhist funerary ritual to close the doors of the three evil destinies (hell, hungry ghost, animal realm) and guide the deceased toward favorable rebirth. The Sarvadurgatipariśodhana dhāraṇī — Oṃ śodhane sarva-pāpa-viśoddhane śuddhe viśuddhe sarva-karmāvaraṇa-viśuddhe svāhā — is one of the most widely used Buddhist purification mantras across Central and East Asian traditions. In the Dunhuang funerary guide Lha yul du lam bstan pa (Pelliot tibétain 366/367, c. 10th century), the complete dhāraṇī is embedded in a practical guide for the dead: after recitation blocks the doors to the three lower realms, the text maps the deceased's path northward through Mount Meru to the divine assembly hall of Sudharmā and beyond.

Sudharmā (सुधर्मा, Tibetan: ཆོས་བཟང, chos bzang) — "Good Dharma" or "Hall of Righteous Assembly." The divine assembly hall of the Trāyastriṃśa (Thirty-Three) heaven atop Mount Meru in Buddhist cosmology, where Śakra (Indra), king of the gods, convenes his thirty-two divine ministers. In the Dunhuang funerary guide Lha yul du lam bstan pa (Pelliot tibétain 366/367), the Sudharmā is the first heavenly destination on the guided path of the dead — the place where Indra addresses the deceased as "noble son" and teaches the heavenly speech of the dharma. The name appears in Pali sources as Sudhammā, where it is described as a hall that accommodates itself to any number of divine visitors and is never too hot, too cold, or too bright.

Pratītyasamutpāda (རྟེན་ཅིང་འབྲེལ་པར་འབྱུང་བ, Skt. pratītyasamutpāda) — Dependent origination, the central Buddhist teaching that all phenomena arise in dependence upon conditions. The twelve links (nidānas) form a chain from ignorance through formations, consciousness, name-and-form, the six sense-bases, contact, feeling, craving, grasping, becoming, birth, and ageing-death. Mahamati calls dependent origination "the treasure of the Tathāgata's speech" — whoever understands it understands the entire Dharma.

Suhṛllekha (བཤེས་པའི་སྤྲིང་ཡིག, Skt. suhṛllekha) — The "Letter to a Friend," Nāgārjuna's personal letter to King Udayin condensing the entire Buddhist path into 123 verses. One of the most memorised and commented texts in Tibetan Buddhism. Mahamati's Clear Words (Sphuṭārthā) is the only surviving Indian word-by-word commentary.

Sphuṭārthā (ཚིག་གསལ་བ, Skt. sphuṭārthā) — "Clear Words," the title of Mahamati's commentary on Nāgārjuna's Letter to a Friend. The name indicates the commentator's method: making the meaning of each word transparent. The Sanskrit is lost; only the Tibetan survives, translated by Sarvajñadeva and dPal-brtsegs.

Vaitaraṇī (ཆུ་བོ་རབ་མེད, Skt. vaitaraṇī) — The river of hell in Buddhist cosmology, described in Mahamati's commentary as filled with molten bronze that is poured into the mouths of beings. The name literally means "difficult to cross." It appears in both Buddhist and Hindu descriptions of the underworld.

Btsan po (བཙན་པོ, Old Tibetan: btsan po) — "Sovereign" or "mighty one." The title of the kings of the Tibetan Empire (7th–9th century CE). The full ceremonial form, 'phrul gyi lha btsan po ("the god who is a divine emanation, the sovereign"), expressed the Tibetan concept of kingship as divine incarnation — the ruler not merely appointed by heaven but an emanation of celestial power in the human realm. The btsan po was head of state, military commander, and religious patron. In the Skar Cung inscription, five generations of btsan po are catalogued by their Buddhist works — each building temples and "establishing supports of the Three Jewels" — treating the dynasty's Buddhist patronage as both a religious and constitutional duty.

Rdo rings (རྡོ་རིངས, Old Tibetan: rdo rings) — "Stone pillar" or "tall stone." The medium of the Tibetan Empire's most important public documents. The rdo rings served the same function as the Roman stela or Chinese stele: a permanent, publicly visible record of royal edicts, treaties, and legal charters inscribed in stone. The surviving corpus of Old Tibetan stone pillar inscriptions — at Lhasa, 'Phyong Rgyas, Rkong Po, Mtshur Phu, and elsewhere — constitutes the most important body of firsthand historical evidence for the Tibetan Empire period. The Skar Cung inscription explicitly mentions the dual recording: "the edict text and inscribed upon the stone pillar" (gtsigs kyi yi ge dang / rdo rings la bris pa), distinguishing the written document kept in archive from its public lithic copy.

Lha ris (ལྷ་རིས, Old Tibetan: lha ris) — "Divine register" or "register of the gods." A classification in the Tibetan imperial administrative system denoting persons and property enrolled as temple dependents, exempt from secular taxation and corvée. The lha ris kyi 'bangs ("servants of the divine register") were people assigned to Buddhist institutions whose labor supported the monasteries rather than the state. In the Lcang Bu charter, King Ralpachen commands that the temple's servants and property "shall not be taxed, and that corvée and fines shall not be levied" — a protection enforced through inscription in the divine register. The Skar Cung inscription references "the head of the divine register of households" (lha ris kyi khyim yig gi mgo nan) as containing the legal framework for punishing those who harm the Three Jewels.

Mchod gnas (མཆོད་གནས, Old Tibetan: mchod gnas) — "Field of merit" or "worthy recipient of offerings." In Tibetan Buddhist institutional language, mchod gnas designates the status of monastics as worthy recipients of lay patronage — a concept derived from the Sanskrit puṇyakṣetra (field of merit). In the Skar Cung inscription, the ordained are to "be treated as a field of merit" (mchod gnas su gnang ba), and offerings to the Three Jewels in the sovereign's palace "shall not be abandoned or diminished at any time, and they shall be maintained as a field of merit." This institutional status — rooted in Buddhist cosmology where giving to monastics generates immeasurable karma — was the economic foundation of the Tibetan monastic system, legally protected by royal edict.

'Phyong Rgyas (འཕྱོང་རྒྱས, Old Tibetan: 'phyong rgyas) — The Valley of the Kings. A valley in Chongye County, Lhoka Prefecture, central Tibet, containing the burial mounds (bang so) of the emperors of the Yarlung dynasty. The most important royal necropolis of the Tibetan Empire. The tomb inscription of Khri Lde Srong Brtsan (insc_Khrilde, 815–817 CE) identifies the burial site and names the mound "Rgyal Chen 'Phrul" ("Great Miraculous Royal"). The Valley of the Kings is the only surviving archaeological site where the full mortuary culture of the Tibetan Empire — the tumuli, the inscribed stone pillars, the landscape of royal memory — can still be read. The site preserves at least six imperial burial mounds, making it comparable in significance to the Valley of the Kings in Egypt, though far less documented.

G.yung drung (གཡུང་དྲུང, Old Tibetan: g.yung drung) — "Eternal" or "indestructible." The Tibetan term for the swastika symbol, signifying permanence, stability, and the unchanging. In the Bon tradition, g.yung drung is the central sacred symbol — the religion itself is called "g.Yung Drung Bon" ("Eternal Bon"). In the imperial inscriptions, the term appears in legal and political contexts: the Zhol inscription grants a silver charter "g.yung drung du" ("for eternity"), and the Khrilde tomb inscription compares the emperor's rule to "a great eternal temple" (g.yung drung gi gtsug lag chen po). The word carries both religious and legal force — when an inscription says something is granted "g.yung drung du," it means irrevocably, in perpetuity, beyond the possibility of rescission.

Hor (ཧོར, Old Tibetan: hor) — A collective term for northern peoples bordering the Tibetan Empire. The term's referent shifted over time: in the imperial period (7th–9th century), "Hor" likely designated the Uighurs and possibly other Turkic or steppe peoples of the northern frontier. In later Tibetan usage, "Hor" came to mean "Mongol." The Khrilde tomb inscription (insc_Khrilde) distinguishes between the "Dru-gu" (Turks) and the "Hor Ser" (Yellow Hor), suggesting two separate peoples. The qualifier ser ("yellow/golden") may identify a specific Hor group — possibly the Uighurs of the Orkhon Valley, whose name was sometimes associated with golden or yellow imagery. The inscription records that both the Turks and the Hor peoples eventually "submitted to the realm and requested audience," indicating the breadth of Tibetan imperial authority in the north.